Lawrence M. Page- PhD
- Curator of Fishes at University of Florida
Lawrence M. Page
- PhD
- Curator of Fishes at University of Florida
Current research is on the systematics of several groups of SE Asian fishes and an inventory of the Mae Klong R. basin
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Introduction
Current research is on the systematics of several groups of SE Asian fishes and an inventory of the Mae Klong R. basin
Skills and Expertise
Current institution
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January 2005 - present
Publications
Publications (213)
Molecular data from 35 of the 50 Acrossocheilinae species suggest that the species-level diversity in the subfamily has been overestimated, likely due to inadequate taxon and geographic sampling and reliance on morphological characters that vary intraspecifically. Three new genera, one resurrected genus, two resurrected species, and one new species...
The joint American Fisheries Society and American Society of Ichthyologists and Herpetologists Committee on Names of Fishes has updated the list of the species of fishes in the three countries of North America. This contribution provides succinct analyses of the changes in these data over the eight editions, for example, the discovery of new specie...
The taxonomy of the Parachela–Oxygaster–Macrochirichthys clade of Xenocyprididae has been confused since the original descriptions of Parachela oxygastroides and Parachela hypophthalmus in the mid‐19th century. The confusion seems attributable to the substantial intraspecific variation in color and other morphological characteristics of species of...
Molecular data from samples encompassing 22 nominal species of Poropuntius indicate that the species-level diversity in the genus has been vastly overestimated, likely due to inadequate taxon and geographic sampling and reliance on morphological characters that vary intra-specifically. The latter includes discrete mouth morphologies related to alte...
The eighth edition of Common and Scientific Names of
Fishes from the United States, Canada, and Mexico (Page et al. 2023) continues the effort established by seven earlier editions to standardize the names of North American fishes, thereby improving communication among fisheries biologists, popular media, and others with an interest in fishes. It p...
This authoritative reference provides an accurate, up-to-date checklist of common and scientific names for all described and taxonomically valid fish species living in fresh and marine waters of North America. This edition reflects numerous taxonomic changes that have occurred since 2004 and includes 3,875 species and 260 families. Provides the rat...
Garra panitvongi, new species, is described from the Ataran River drainage, Salween River basin, of southeastern Myanmar and western Thailand. It is the sixth species of Garra known from the Salween River basin and is readily distinguished from all congeners by the red-orange color of the body and caudal fin, and a pointed proboscis with a blue str...
Five species of Glyptothorax are identified from the Mae Klong River basin in western Thailand, only one of which, G. buchanani, was previously reported from the basin; others are G. lampris, G. longinema, G. platypogonides, and G. schmidti. The morphological differences delineating species of Glyptothorax in the Mae Klong were visualized using pri...
A review of the six recognized species of Pseudohomaloptera is provided. Counts in the original description of Pseudohomaloptera sexmaculata Fowler (1934) were incorrect and led to confusion in identifying populations of Pseudohomaloptera in mainland Southeast Asia, and the species is re‐described. The validity of Homaloptera septemmaculata Fowler...
Balitorid loaches are a family of fishes that exhibit morphological adaptations to living in fast flowing water, including an enlarged sacral rib that creates a ‘hip’-like skeletal connection between the pelvis and the axial skeleton. The presence of this sacral rib, the robustness of which varies across the family, is hypothesized to facilitate te...
Herein, we present the complete mitochondrial genome of the Jaguar Loach, Yasuhikotakia splendida. The sequence was determined from an aquarium specimen using a next-generation sequencing approach. The annotated Y. splendida mitogenome was 16,695 bp in length and contained 13 protein-coding genes (PCGs), 2 ribosomal RNA genes, 22 transfer RNA genes...
The tribes Contradentini and Rectidentini (Unionidae) comprise a diverse clade of freshwater mussels endemic to South-east Asia. Our understanding of the diversity and phylogeny of this radiation has improved dramatically in recent years, but this systematic transformation has not yet benefited from comprehensive museum sampling or phylogenomic met...
The Southeast Asian cyprinid genus Henicorhynchus has a complicated taxonomic history due to morphological similarities with other genera and among species within the genus itself. Henicorhynchus and its constituent species are herein revised based on morphological examinations of over 1,000 specimens with a particular emphasis on oromandibular str...
The rheophilic hillstream loaches (Balitoridae) of South and Southeast Asia possess a range of pelvic girdle morphologies, which may be attributed to adaptations for locomotion against rapidly flowing water. Specifically, the connectivity of the pelvic plate (basipterygium) to the vertebral column via a sacral rib, and the relative size and shape o...
Web-based information systems designed to increase access to species occurrence data for use in research and natural resource decision-making have become more prevalent over the past few decades. The effectiveness of these systems depends on their usability and extent of use by their intended audiences. We conducted an online survey of academics an...
Bibarba parvoculus, a depigmented and small-eyed, spined loach, is endemic to a karst cave in southern China. Both mitochondrial Cytb and nuclear RAG1 gene analyses indicate that B. parvoculus and its only surface congener, B. bibarba, form the basal-most lineage in the so-called Northern Clade of Cobitidae. Genetic divergence for Cytb is 10.3 % be...
A survey of 280 fish biologists from a diverse pool of disciplines was conducted in order to assess the use made of biodiversity collections and how collections can better collect, curate and share the data they have. From the responses, data for how fish biologists use collections, what data they find the most useful, what factors influence the de...
Garra surinbinnani, new species, is described from the Mae Khlong basin of western Thailand. It is the fourth species of Garra known from the basin and occurs syntopically with the other three species in fast-flowing rocky riffles. Within the Mae Khlong basin, it is most similar to G. fuliginosa from which it differs most obviously in having a bilo...
The complex climatic and geological history of Southeast Asia has been hypothesised to determine the most important aspects of the current phylogeographical structure and distribution of living organisms throughout the region. To test existing hypotheses, the genetic structure of the tire track eel, Mastacembelus favus, was investigated using 823 b...
There is a general consensus that the genus Schistura (Nemacheilidae), currently with 241 species, is not monophyletic. However, weak morphological synapomorphies and a lack of genetic data for most species of Schistura and their presumptive relatives have prevented meaningful diagnoses of species groups within this genus. To aid in deciphering evo...
Freshwater mussels (order Unionoida) are a diverse radiation of parasitic bivalves that require temporary larval encystment on vertebrate hosts to complete metamorphosis to free-living juveniles. The freshwater mussel-fish symbiosis represents a useful relationship for understanding eco-evolutionary dynamics in freshwater ecosystems but the practic...
Recent changes in institutional cyberinfrastructure and collections data storage methods have dramatically improved accessibility of specimen-based data through the use of digital databases and data aggregators. This analysis of digitized fish collections in the U.S. demonstrates how information from data aggregators, in this case iDigBio, can be e...
Summary data for fish collections arranged alphabetically by institutional code.
(DOCX)
Acantopsis bruinen, new species, is described from the Mekong River basin in Cambodia, Thailand, and Laos, and from the Mae Khlong and Tapi River basins in Thailand. It is distinguished from all other species of Acantopsis by combination of 11-13 pectoral-fin rays, 10 1 /2 branched dorsal-fin rays; 3 labial barbel pairs; a single, undivided row of...
Evolutionary and ecological hypotheses of the freshwater mussel subfamily Ambleminae are intensely geographically biased—a consequence of the complete exclusion of Mesoamerican taxa in phylogenetic reconstructions of the clade. We set out to integrate a portion of the Mesoamerican freshwater mussel assemblage into existing hypotheses of amblemine c...
Members of the freshwater halfbeak genus Dermogenys are hard to identify to the species level, despite several previous attempts to isolate fixed meristic, morphometric and colour pattern differences. This has led to ongoing confusion in scientific literature, records of species occurrence, and entries in museum collections. Here, a DNA barcoding s...
The Indotropical freshwater mussel assemblage has more genera of uncertain subfamily-level position (i.e. genera incertae sedis) than all other regional faunas. Of the 16 genera incertae sedis in the Indotropics, only two, Harmandia and Unionetta, are distributed in the mainland southeast Asia subregion. Resolving the enigmatic systematic position...
The Indotropical freshwater mussel assemblage has more genera of uncertain subfamily-level position (i.e. genera incertae sedis) than all other regional faunas. Of the 16 genera incertae sedis in the Indotropics, only two, Harmandia and Unionetta, are distributed in the mainland southeast Asia subregion. Resolving the enigmatic systematic position...
Promotion of collection importance is paramount in securing a future in research and outreach through the exposure of diverse stakeholders to the incredible resource of biological collections. One outlet to increase exposure to collections’ data is through data aggregation. Data aggregation allows for a wide array of research, education and outreac...
This book is a comprehensive identification guide to the 222 species of fishes in Florida’s fresh waters. Each species is presented with color photographs, key characteristics for identification, comparisons to similar species, habitat descriptions, and dot distribution maps.
Florida's unique mix of species includes some of the world's favorite sp...
Megalonaias is the most geographically widespread genus of the subfamily Ambleminae and is distributed across much of the eastern half of North America, from Minnesota to Nicaragua. Despite the large geographic distribution, the species-level diversity of Megalonaias is quite depauperate (2 spp.), suggesting the genus may not be constrained by the...
Due to an unfortunate mistake during the production process of the original publication, part of Table 1 was omitted. Hence, the original article has been corrected. The missing section (region ‘Mobile’) of Table 1 is also published on the following page. Springer Nature regrets the error and accepts sole responsibility.
Fishes in the fresh waters of Florida: identification guide and atlas
Acantopsis (Cobitidae) is revised based on analysis of morphological and molecular data. Four of the six available names, A. dialuzona, A. spectabilis, A. octoactinotos, and A. thiemmedhi, are valid, and three new species, A. rungthipae, A. dinema, and A. ioa, are described. All species are described morphologically, distributions are mapped, and r...
The Paracanthocobitis zonalternans species complex is revised based on analysis of morphological and molecular data. Three new species, P. nigrolineata, P. marmorata, and P. triangula are described, and P. phuketensis is removed from synonymy. All species are described morphologically, geographic ranges are delimited, and relationships are discusse...
In our opinion, no morphological or genetic data define popu-
lations that have been referred to as the G. robusta complex in the lower Colorado River basin as members of more than one species (i.e., as populations on separate evolutionary trajectories; Simp- son 1961; Wiley 1981). Differences that have been described among localities, and that led...
The Southeast Asian cyprinid genus Crossocheilus was briefly described by Kuhl and van Hasselt in 1823 and, despite the short description, has remained a valid genus. However, the genus and its species are frequently misidentified in institutional collections, likely due to the absence of a detailed diagnosis and description, as well as the superfi...
Kottelat (2016) noted that ‘Gonorhynchus McClelland, 1838,’ the name used for a South Asian cyprinid genus recognized by Yang et al. (2012) and revised by Ciccotto & Page (2016), does not exist or is a junior homonym of Gonorhynchus Cuvier, 1816. He further noted that Tariqilabeo Mirza & Saboohi, 1990 is the valid genus name for the species recogni...
The cyprinid genus Lobocheilos in mainland Southeast Asia has a complex taxonomic history, with 12 nominal species described in the early- to mid-20th Century from Thailand, Laos, and Vietnam by several authors based primarily on lateral melanin pigmentation and morphometric data. More recent works tentatively recognize anywhere from two to six val...
Members of the AFS/ASIH Joint Committee on the Names of Fishes has completed its review of information on morphological and genetic variation in the genus Gila in the lower Colorado River basin of Arizona and New Mexico (which includes the Little Colorado River, Bill Williams River, Gila River, Verde River, and Salt River drainages) and has conclud...
A new diagnosis of the genus Gonorhynchus McClelland 1838 from South Asia is proposed. Seven species are contained in the genus: G. latius (Hamilton 1822), G. diplochilus (Heckel 1838), G. wattanah (Sykes 1839), G. macmahoni (Zugmayer 1912), G. burmanicus (Hora 1936), G. bicornis (Wu 1977), and G. periyarensis (Menon & Jacob 1996). Gonorhynchus lat...
The U.S. National Science Foundation-funded (DEB 1022720) 'All Cypriniformes Species Inventory' was initiated in 2010 and will be completed in 2015. It has accelerated the rate of discovery and description of cypriniform fishes, expanded our knowledge of the phylogenetic relationships of cypriniforms, increased the capacity for systematic research...
The Amphilius jacksonii complex is revised, and five new species are described: A. ruziziensis n. sp. from the Ruzizi River drainage and northeastern tributaries of Lake Tanganyika; A. pedunculus n. sp. from the Malagarasi River drainage, Lake Rukwa basin, and upper Great Ruaha River drainage, Rufiji basin; A. frieli n. sp. from the upper Congo bas...
Aperioptus pictorius was described by Richardson in 1848 with limited textual information but with an illustration sufficient to confirm the species as one currently recognized as Acanthopsoides molobrion making Aperioptus a senior synonym of Acanthopsoides Fowler 1934 and A. pictorius a senior synonym of Acanthopsoides molobrion Siebert 1991. Spec...
The U.S. National Science Foundation-funded (DEB 1022720) ‘All Cypriniformes Species Inventory’ was initiated in 2010 and will be completed in 2015. It has accelerated the rate of discovery and description of cypriniform fishes, expanded our knowledge of the phylogenetic relationships of cypriniforms, increased the capacity for systematic research...
Homaloptera van Hasselt 1823 as treated historically exhibits substantial morphological diversity and is paraphyletic based on both morphological and molecular data. The morphological diversity and phylogenetic relationships of Homaloptera, Homalopteroides Fowler 1905, Homalopterula Fowler 1940, and Balitoropsis Smith 1945, are elucidated. Pseudoho...
A morphological study of female genital papillae of Etheostoma was conducted to examine the evolution of papillae as predicted by molecular phylogenies, and to examine correlations between papilla morphology and spawning behaviors and oviposition. Thirteen characters were used to describe variation in papillae in 128 species. Based on maximum likel...
The classification of the North American darters (Percidae: Etheostomatinae) has been a subject of historical interest and rigorous debate. Conflicting morphological and molecular phylogenetic analyses have made relationships among species unclear and have hampered attempts at classification. Recently we showed that amplified fragment length polymo...
Homalopteroides avii, new species, is described from the Rajang River basin, Sarawak, Malaysian Borneo. It is distinguished from all other species of Homalopteroides by a wider gape of 28.5-33.3% HL vs. 22.3-24.2% for H. wassinkii, 20.0-28.4% for H. modestus, 19.1% for H. rupicola, 19.1-27.3% for H. smithi, 20.0-23.2% for H. stephensoni, 20.226.9%...
Lepidocephalus has been assumed to include only two species and confined to peninsular Malaysia and Indonesia. However, based on records and collections reported herein, the genus contains five species and is most common in the Chao Phraya basin of Thailand. Large rivers seem to be the preferred habitat, and difficulty in collecting these rivers ma...
An improved and expanded nomenclature for genetic sequences is introduced that corresponds with a ranking of the reliability of the taxonomic identification of the source specimens. This nomenclature is an advancement of the "Genetypes" naming system, which some have been reluctant to adopt because of the use of the "type" suffix in the terminology...
A core mission of the Integrated Digitized Biocollections (iDigBio) project is the building and deployment of a cloud computing environment customized to support the digitization workflow and integration of data from all U.S. non-federal biocollections. iDigBio chose to use cloud computing technologies to deliver a cyber infrastructure that is flex...
In 2013, the seventh edition of the Common and Scientific Names of Fishes from the United States, Canada, and Mexico was published. Major changes include the capitalization of English common names, the addition of French common names for each species found in Canada, and the recognition of occurrences in the Arctic Ocean as separate from the Atlant...
Biodiversity informatics plays a central enabling role in the research community's efforts to address scientific conservation and sustainability issues. Great strides have been made in the past decade establishing a framework for sharing data, where taxonomy and systematics has been perceived as the most prominent discipline involved. To some exten...
Recent fieldwork has revealed the presence of six species of Schistura McClelland 1838 in the Mae Khlong basin in south-western Thailand. These include S. sexcauda (Fowler 1937), S. balteata (Rendahl 1948), S. mahnerti Kottelat 1990, the recently described S. aurantiaca Plongsesthee et al. 2011 and S. tenebrosa Kangrang et al. 2012, and a newly dis...
The genus Homalopteroides Fowler 1905 is resurrected and distinguished from the genus Homaloptera van Hasselt 1823 based on a combination of characters including a unique mouth morphology, dorsal-fin origin over pelvic fin, ≤ 60 lateralline scales, and ≤ 30 predorsal scales. Species included in Homalopteroides are H. wassinkii (Bleeker 1853), H. mo...
Schistura myrmekia (Fowler 1935) was originally described from a single specimen collected from Keng Sok, southwestern Thailand. It was differentiated from a similar species, S. desmotes (Fowler 1934), by having four-rather than three-dark bands behind the dorsal fin, and the presence of a wart-like suborbital flap. Although S. myrmekia has since b...
A new species of Schistura is described from the Kwai Noi, Mae Khlong basin, in the Thong Pha Phum District of Kanchanaburi Province in western Thailand. The species is distinguished from all other species of Schistura by a uniform dusky brown color pattern without marks on the dorsum or side of body and with many conspicuous supplementary neuromas...
Sexually dimorphic characteristics are described for four species of Schistura from the Mae Khlong basin and peninsular Thailand. Males of S. mahnerti have a suborbital flap and rows of unculi on the upper surfaces of the pectoral-fin rays. Females of S. mahnerti have a suborbital groove. None of the morphological measurements differ significantly...
The time is ripe for a comprehensive mission to explore and document Earth's species. This calls for a campaign to educate and inspire the next generation of professional and citizen species explorers, investments in cyber-infrastructure and collections to meet the unique needs of the producers and consumers of taxonomic information, and the format...
Aim Geographic variation in species richness is a well-studied phenomenon. However, the unique response of individual lineages to environmental gradients in the context of general patterns of biodiversity across broad spatial scales has received limited attention. The focus of this research is to examine relationships between species richness and c...
Recent attention has focused on the efficacy of amplified fragment length polymorphisms (AFLPs) for resolving deep evolutionary relationships. Here we show that AFLPs provide resolution of deep relationships within the family Percidae that are more consistent with previous morphological hypotheses than are relationships proposed by previous molecul...
Schistura aurantiaca, new species, is described from the Mae Khlong basin in western Thailand. It is distinguished from all other species of Schistura by a unique color pattern of 3-9 orange bars on the side of the body, with the 1st bar immediately behind the head and the 2nd bar near the dorsal-fin origin and widely separated so that most of the...
Mitochondrial (cyt b and ND2) and nuclear gene (S7 intron 1) sequences were generated to evaluate phylogenetic relationships and validity of the monotypic minnow genus Opsopoeodus. Parsimony and Bayesian phylogenetic analyses of the mitochondria, markers resulted in largely unresolved relationships among ingroup taxa. Relationships recovered from t...
The taxonomy of the Amphilius uranoscopus group in Kenya is revised. Amphilius athiensis n. sp. is described from the Galana River basin, and Amphilius grandis and Amphilius krefftii are removed from synonymy with A. uranoscopus and redescribed. All three species are assigned to the Amphilius uranoscopus group, which is distinguished from other spe...
Lepidocephalichthys (Telostei:Cobitidae) is diagnosed as being unique among cobitids in having the 7–8th pectoral rays of mature males modified. Recently collected material from Thailand included a new species of Lepidocephalichthys in which mature males have a large (extending over ~75% of the fin-ray length) dorsally projecting and serrated flang...
The genus Lepidocephatichthys is revised and diagnosed as having the seventh and eighth pectoral rays modified in the mature male. Other cobitids have different pectoral rays modified (second ray In Cobitis). The 17 valid species of Lepidocephalichthys are discussed and compared. Fifteen species are redescribed: L. annandalei, L. arunachalensis, L....
Nanobagrus torquatus, a new species of bagrid catfish, is described from the Musi drainage in southern Sumatra. Nanobagrus torquatus is distinguished from all congeners by a body color pattern consisting of a single distinct yellow/cream band around the body just behind the head (vs. three or more bands on body or body lacking distinct bands). It m...
Synodontis macropunctata, a new species of mochokid catfish, is described from tributaries of the Kasai River in northern Angola. Specimens of this species have been identified as S. zambesensis and more recently as S. nigromaculata. Synodontis macropunctata is distinguished from these species and all Congo basin congeners by the following combinat...
Percina sciera apristis (Hubbs & Hubbs) was described as a subspecies based on the hypothesis that the population in the Guadalupe River system was morphologically distinct from other populations and that populations geographically closest to the Guadalupe River were intergrades between P. s. sciera and P. s. apristis. Our data confirm the decision...
Percina sciera apristis (Hubbs & Hubbs) was described as a subspecies based on the hypothesis that the population in the Guadalupe River system was morphologically distinct from other populations and that populations geographically closest to the Guadalupe River were intergrades between P. s. sciera and P. s. apristis. Our data confirm the decision...
A new species related to Perana macrocephala is described from the upper Tennessee River drainage. Percina williamsi is distinguished from all species of Percina except P. macrocephala by the presence of a sickle-shaped suborbital bar and a black bar subtending a medial black spot on the caudal-fin base. It is separated from P. macrocephala by havi...
Two new species of Akysis from Sumatra are described, and A. variegatus, the type species of Akysis, is redescribed. All three species are members of the A. valiegatus species group, characterized by a space between the anterior nostril and the base of the nasal barbel that is about equal to the diameter of the anterior nostril, relatively small an...
The taxonomy of the Synodontis of Lake Tanganyika was investigated by examining 312 museum specimens. Morphometric, meristic, and nontraditional internal and external characters were examined, resulting in the recognition of 11 species of Synodontis from Lake Tanganyika. Ten of the species are endemic to the lake basin, and three are new to science...
External morphological traits diagnostic for valid genera in the Asian catfish families Sisoridae and Erethistidae were identified from publications and the examination of specimens. Diagnoses based on external morphological traits are predicted to significantly facilitate taxonomic revisions in these families. Erethistidae contains six valid gener...
Pterygoplichthys punctatus and P. weberi, new species, are unique among hypostomines in having a medially divided buccal papilla. The two species can be separated from one another by color (small spots in P. punctatus, large in P. weberi), condition of the buccal papilla (deeply divided at all ages in P. punctatus vs. shallowly divided in adults of...
Three species of sailfin catfishes (Pterygoplichthys) native to South America, P. multiradiatus, P. pardalis and P. disjunctive, have been collected recently in several countries in southeastern Asia. Pterygoplichthys multiradiatus is known to reproduce in Taiwan, and P. pardalis is presumed to be reproducing in Singapore given the frequency of its...
ID: 8753; issued December 15, 1996 INHS Technical Report prepared for US National Biological Service
