Renny K Hadiaty

• DSc
• Head of Department at Indonesian Institute of Sciences

This book explores the ecology, biology, and conservation of the Arfak rainbowfish (Melanotaenia arfakensis), an endemic freshwater fish found in rivers on the northern side of the Arfak Mountains and extending to the Kebar area, Papua.

Biodiversity knowledge is widely heterogeneous across the Earth’s biomes. Some areas, due to their remoteness and difficult access, present large taxonomic knowledge gaps. Mostly located in the tropics, these areas have frequently experienced a fast development of anthropogenic activities during the last decades and are therefore of high conservati...

Sexual selection drives rapid phenotypic diversification of mating traits. However, we know little about the causative genes underlying divergence in sexually selected traits. Here, we investigate the genetic basis of male mating trait diversification in the medaka fishes (genus Oryzias) from Sulawesi, Indonesia. Using linkage mapping, transcriptom...

Within the subfamily Danioninae, rasborine cyprinids are known as a ‘catch-all’ group, diagnosed by only a few characteristics. Most species closely resemble each other in morphology. Species identification is therefore often challenging. In this study, we attempted to determine the number of rasborine species occurring in samples from the Mesangat...

A new species of bagrid catfish in the genus Leiocassis is described from the Mahakam River drainage in eastern Borneo. Leiocassis rudicula, new species, can be distinguished from congeners in having a unique combination of: distinct concavity at level of orbit in dorsolateral profile of head; tip of supraoccipital spine not reaching anterior nucha...

Biodiversity hotspots have provided useful geographic proxies for conservation efforts. Delineated from a few groups of animals and plants, biodiversity hotspots do not reflect the conservation status of freshwater fishes. With hundreds of new species described on a yearly basis, fishes constitute the most poorly known group of vertebrates. This si...

Although there are many examples of color evolution potentially driven by sensory drive, only few studies have examined whether distinct species inhabiting the same environments evolve similar body colors via shared sensory mechanisms. In this study, we tested whether two sympatric freshwater fish taxa, halfbeaks of the genus Nomorhamphus and ricef...

Background: The ancient Malili Lakes (Sulawesi, Indonesia) harbour an exceptional diversity of freshwater animals, including several endemic species flocks. Lake Matano, the hydrological head of the lake system, has seen the successful invasion of a man-made hybrid fish, the flowerhorn cichlid. In less than one decade, flowerhorns colonized the ent...

The Oryzias woworae species group, composed of O. asinua, O. wolasi, and O. woworae, is widely distributed in southeastern Sulawesi, an island in the Indo-Australian Archipelago. Deep-elongated body shape divergence is evident among these three species to the extent that it is used as a species-diagnostic character. These fishes inhabit a variety o...

Snakehead fishes of the family Channidae are predatory freshwater teleosts from Africa and Asia comprising 38 valid species. Snakeheads are important food fishes (aquaculture, live food trade) and have been introduced widely with several species becoming highly invasive. A channid barcode library was recently assembled by Serrao and co-workers to b...

50% Majority rule consensus tree of the neighbour joining tree based on HKY distances. Bootstrap values from 1000 pseudoreplicates are shown. (EPS)

Snakehead chronogram from the BEAST analysis using a coalescence prior. Species delimitations based on BIN, GMYC single, GMYC multiple, and PTP thresholds are indicated by black bars. Misidentified and incomplete identified specimens are indicated with a red dot. (EPS)

Neigbour joining tree of Parachanna including additional sequences. The lineage corresponding to the new species Pa. sp. DRCongo is highlighted in light red. (PDF)

Neigbour joining tree based on HKY distance. Misidentified and incomplete identified specimens are indicated with a red dot. (EPS)

Maximum likelihood tree of the 423 taxa data set that only included unique haplotypes. Bootstrap values from 1000 pseudoreplicates are shown. (PDF)

Table of specimens, GenBank accession numbers, BOLD identification, BIN assignment and locality information. (XLSX)

Result of the bGMYC analysis showing sequence-by-sequence distribution of posterior probabilities. The coloured table is a matrix with the probabilities of sequences to be conspecific, ranking from yellow to red: the highest to the lowest values. The timetree corresponds to the consensus tree from BEAST analysis. (EPS)

Many straits in the Japanese archipelago have been proposed as biogeographical boundaries, but there is disagreement regarding their importance as historic barriers against dispersal of terrestrial and freshwater taxa. Mitochondrial DNA haplotype and phylogenetic analyses of Lefua nikkonis, a primary freshwater fish inhabiting northern Japan and de...

The species of Schismatogobius from Indonesia are reviewed and compared to the known species described from the area. Eight species are recognized including four new species. These are described using genetic and morphomeristic approaches. The species differ by a high percentage of genetic divergence in partial COI gene (652 bp) and by several char...

Among the 899 species of freshwater fishes reported from Sundaland biodiversity hotspot, nearly 50% are endemics. The functional integrity of aquatic ecosystems is currently jeopardized by human activities and landscape conversion led to the decline of fish populations in several part of Sundaland, particularly in Java. The inventory of the Javanes...

The Oryzias woworae species group, composed of O. asinua, O. wolasi, and O. woworae, is a group of the family Adrianichthyidae endemic to Sulawesi Tenggara (Southeast Sulawesi). Here, we report new localities of each of the three species in this group, which were collected during our field expeditions in 2014-2015. In total, six new localities were...

Strong disruptive ecological selection can initiate speciation, even in the absence of physical isolation of diverging populations. Species evolving under disruptive ecological selection are expected to be ecologically distinct but, at least initially, genetically weakly differentiated. Strong selection and the associated fitness advantages of narr...

With 1172 native species, the Indonesian ichthyofauna is among the world’s most speciose. Despite that the inventory of the Indonesian ichthyofauna started during the eighteen century, the numerous species descriptions during the last decades highlight that the taxonomic knowledge is still fragmentary. Meanwhile, the fast increase of anthropogenic...

Sulawesi is the largest island of the Wallacea. Here, we present an annotated checklist of fish species recorded in Sulawesi's inland waters. We recognize a total of 226 species from 112 genera and 56 families. Gobiidae (41 species), Adrianichthyidae (20 species) and Telmatherinidae (19 species) are most species-rich, making up a total of 43% of th...

A new species of Stiphodon, an amphidromous goby, is described from streams of three islands in Indonesia, Java, Bali and Lombok. It differs from other species of the genus by a combination of characters including 14-15 pectoral rays, a second dorsal fin with nine segmented rays, fewer scales in predorsal, transverse forward and transverse back ser...

A new species of Sicyopterus, freshwater goby, is described from Sumatra and Java, Indonesia. It differs from other species belonging to the genus by a combination of characters including two lateral clefts on the crenulated upper lip, a second dorsal fin with one spine and 10 segmented rays, second and third rays of the first dorsal fin filamentou...

We describe a new genus and species of bagrid catfish from the Kreung Babah Rot drainage in northwestern Sumatra. This new taxon is distinguished from confamilials by the following combination of characters: anguilliform body, reduced supraoccipital posterior process, absence of first dorsal spinelet, first proximal dorsal-fin radial inserting on 4...

Eight new species of Rainbowfishes are described from the Birds Head region by combining a cytochrome oxydase I gene (COI) phylogeny, 12 microsatellite loci and diagnostic morphological characters. The new species Melanotaenia klasioensis, M. longispina and M. susii belong to the "Central Ayamaru Plateau" cluster in the COI phylogeny and are geneti...

Background: Java and Bali islands belong to the Sundaland biodiversity hotspot, the most speciose hotspot of the Indonesian archipelago. The eastern part of Java and Bali islands are located at the margin of Sundaland, next to the Wallace line that marks the range distribution boundaries of most of the primary freshwater fishes from a continental o...

hensively sample and identify specimens in these hyperdiverse ecosystems. DNA barcoding is an excellent tool to overcome this barrier. I analysed terrestrial arthropod biodiversity patterns at two sites in Parque Nacional Cusuco, Honduras, by employing Malaise traps as a standardized sampling technique and the Barcode Index Number (BIN) as a proxy...

A new species of the gobiid fish genus Glossogobius is described from Lake Mahalona and compared with a similar species, Glossogobius flavipinnis known only from Lake Towuti, Sulawesi in Indonesia. The new species is a dwarf species, lacking all head pores, a rare condition in the genus. The two Malili Lakes species treated here are allopatric and...

Anthropogenic land-cover change is driving biodiversity loss worldwide. At the epicenter of this crisis lies Southeast Asia, where biodiversity-rich forests are being converted to oil-palm monocultures. As demand for palm oil increases, there is an urgent need to find strategies that maintain biodiversity in plantations. Previous studies found that...

Stiphodon annieae, new species, is described on the basis of material collected from Halmahera (Indonesia). It is distinguished from all other congeners in having a bright blue and red color pattern in males, nine segmented rays in the second dorsal fin, 14 pectoral rays, 34-40 fine tricuspid premaxillary teeth, and a large head.

A new species of Mugilogobius is described from Lake Towuti, central Sulawesi, diagnosed by its possession of a distinct transverse sensory papilla pattern on the cheek, overall blackish colour on head, body and fins and relatively large adult size for the genus. Although it may superficially resemble the black goby Mugilogobius amadi from Lake Pos...

Sicyopus rubicundus n. sp., a sicydiine goby, is described from specimens collected in streams of Java and Bali (Indonesia). It differs from other species of this amphidromous genus by a combination of characters including a first dorsal fin with five spines in both sexes, a second dorsal fin with one spine and nine segmented rays, an anal fin with...

Background The Malili Lakes system in central Sulawesi (Indonesia) is a hotspot of freshwater biodiversity in the Wallacea, characterized by endemic species flocks like the sailfin silversides (Teleostei: Atherinomorpha: Telmatherinidae) radiation. Phylogenetic reconstructions of these freshwater fishes have previously revealed two Lake Matano Telm...

Two new viviparous species of the zenarchopterid genus Nomorhamphus are described from Sulawesi Tenggara, Indonesia. The two new species are allopatric, share the same anal-fi n morphology of adult males, but differ clearly in the length of the lower jaw and by features of fi n pigmentation. Nomorhamphus lanceolatus, new species, and N. sagittarius...

Three new species of Lentipes (L. argenteus, L. ikeae and L. mekonggaensis), freshwater gobies, are described from streams of Sumatra, Java, Bali and Sulawesi (Indonesia). They differ from other species of the genus by a combination of characters including an urogenital papilla lacking lateral lobes and retractable into a sheath-like groove, the nu...

Persistent colour polymorphisms can result from natural and/or sexual selection, and may occur in males, females, or both sexes. Contrary to conspicuous patterns frequently observed in courtship colouration, differences in cryptic colouration are not always perceived by the human sensory system. In sexually dimorphic sailfin silversides fishes, mal...

Oryzias asinua and O. wolasi are two new species of ricefishes described from several disjunct inland freshwater habitats in the Indonesian province of Sulawesi Tenggara or southeastern Sulawesi. With O. woworae, the first described endemic ricefish of Sulawesi Tenggara, they comprise a group of small, colorful species characterized by orange to de...

Oxyeleotris colasi is the first hypogean fish recorded from West Papua. The habitat consists of a freshwater pool in the cave of Jabuenggara located in the heart of Seraran anticline in the limestone karst of Lengguru. The new species is most closely related to the blind cave fish O. caeca described by Allen (1996) from eastern New Guinea. The two...

Invasive fish species can have major impacts on freshwater faunas, particularly in isolated systems harbouring adaptive animal radiations. Here, we report on the occurrence and recent rapid expansion of the hybridogenic "flowerhorn" cichlid in ancient Lake Matano, the hydrological head of the Malili Lakes system in Central Sulawesi, Indonesia. We s...

A new species of Belobranchus, a freshwater Eleotridae, is described from streams of Indonesia. It differs from the other only species belonging to the genus by a combination of characters including the scales in transverse forward series (22-28 versus 27-35), in transverse back series (18-21 versus 20-23), in predorsal scales (16-23 versus 21-34),...

A new species of ricefi sh is described from a hill stream in Tana Toraja, Sulawesi. Oryzias eversi, new species, is distinguished from all other adrianichthyids in Sulawesi by having a low number of fi n rays in anal (17–18 (19)) and dorsal (10–12) fi ns, only 33–36 scales in lateral midline, ½14 transverse scale rows at dorsal fi n origin, 30–32...

Nomorhamphus rex, a new species of viviparous halfbeak, is described from three small rivers in Sulawesi Selatan, Indonesia. The new species differs from all other Nomorhamphus in anal-fi n morphology of adult males. The third or fourth segment of the second anal-fi n ray is composed of two rows of subsegments, giving the third or fourth segment th...

The rainbowfishes of the family Melanotaeniidae represent one of the largest radiations of freshwater fishes from the Indo-Australian archipelago. A total of 75 nominal species have been described, among which several have become very popular among tropical fish hobbyists because of their tendency to form large schools of colourful individuals. Fac...

Four new species of Rainbowfishes are described from the Arguni region. These species are allied to the species already known from the Bomberai Peninsula and the Bird's Neck, namely Melanotaenia ammeri, M. irianjaya, M. kokasensis, M. parva and M. angfa. The new species M. urisa is characterised by a thin and elongated body, a long predorsal length...

Feeding specialisation is a typical feature of adaptive animal radiations. Different kinds of feeding specialisations have evolved in the endemic sailfin silversides species flock in Lake Matano (Central Sulawesi, Indonesia), including egg-feeding. The present study focuses on Telmatherina sarasinorum, a sailfin silverside species feeding on the eg...

Lagusia micracanthus, originally described from three specimens collected in a river near Lagusi in southern Sulawesi, is redescribed in detail based on an extensive series of specimens ranging from small juveniles through adults, and its phylogenetic position is reevaluated. Information on life colouration, habitat, and ontogenetic transitions in...

Hadiaty, R.K., G.R. Allen & M.V. Erdmann. 2012. The fish diversity in Arguni Gulf, Kaimana, West Papua. Zoo Indonesia 21(2), 35-42. Indonesian Institute of Sciences (LIPI) has conducted research in Papua area under Ekspedisi Wilayah Nusantara (EWIN) in Raja Ampat, West Papua for two years (2007 and 2008, consecutively). The research sites was in Wa...

Five new species of Sicyopterus, freshwater gobies, are described from streams of Papua New Guinea and Papua Province, Indonesia. They differ from other species belonging to the genus by a combination of characters including the upper lip morphology, the number of soft rays in the second dorsal fin, the scales in the lateral, predorsal, transverse...

The utility of traits involved in resource exploitation is a central criterion for the adaptive character of radiations. Here, we test for differentiation in morphology, jaw mechanics and nutrition among species and sexes of Lake Matano's sympatric 'roundfin' sailfin silversides. The three incipient fish species differ significant in several candid...

Clarias microspilus, a new species of walking catfish is described from the short coastal rivers draining the western face of the Leuser Mountain Range and debouching into the Indian Ocean in Nangroe Aceh Darussalam province, northern Sumatra, Indonesia. It can be distinguished from Southeast Asian congeners in having a combination of the following...

Nemacheilus marang, new species, is described from Sungai Marang, Bengalon drainage, in the Sangkulirang peninsula karst formation, Borneo, Indonesia. It is distinguished from all other species of Nemacheilus of Borneo among others by its unique colour pattern made of 10-18 dark brown bars on the flank, extending from the dorsal midline to just bel...

Oryzlas woworae, a new species of ricefish, is described from a freshwater habitat on Muna Island off the southeastern coast of the main island of Sulawesi, Indonesia. The new species is distinguished from all other known ricefishes by a remarkable color pattern of both sexes in life: the ventral surface of head and body anterior to the pelvic fins...

Ompok brevirictus, a new species of silurid catfish is described from the short coastal rivers draining the western face of the Leuser Mountain Range and debouching into the Indian Ocean in Nangroe Aceh Darussalam province, northern Sumatra. Ompok brevirictus can be distinguished from Ompok siluroides and O. miostomus, the Southeast Asian congeners...

Pangio lidi is distinguished from the other species of the P. anguillaris group by the absence of pelvic fins. It is presently known only from the Mahakam River drainage in eastern Borneo.

Rasbora lacrimula, new species, is distinguished from all other species of the genus by having very small tubercles forming a kind of granulated 'crest' along the dorsal midline posterior to the dorsal fin, continued onto the upper edge of the caudal fin, and a colour pattern with a faint narrow midlateral stripe ending in longitudinally orien-tate...

Glyptothorax ketambe, a new species of sisorid catfish is described from the Alas River drainage in Nangroe Aceh Darussalam Province, northern Sumatra. Glyptothorax ketambe can be distinguished from all other Sundaic congeners except G schmidti and G siamensis in having a color pattern consisting of a dark brown body with yellowish midlateral and m...

Nemacheilus tebo, new species, is described from Lake Tebo drainage, in the Sangkulirang peninsula karst formation, East Kalimantan, Indonesia. It is distinguished from all other species of Nemacheilus by its unique colour pattern: fl ank with 11-16 bars, those in front of dorsal fi n short, close together or fused, forming a kind of large elongate...

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...

A new species, Diancistrus typhlops (Ophidiiformes, Bythitidae), is described from six adult specimens (51-80 SL ) caught in the dark zone in three anchialine caves on Muna Island, southeast of Sulawesi. It differs from the 27 species of Diancistrus hitherto described by being eyeless and by the combination of the number of dorsal fin rays and leng...

FIGURE 2. T horacic adhesive apparatus of: a. Glyptothorax ketambe, holotype, MZB 8694, 100.0 mm SL; b. G. plectilis, paratype, ZRC 46420, 44.3 mm SL; c. G. siamensis, CMK 10829, 71.8 mm SL. Illustrations not to scale.

FIGURE 1. Glyptothorax ketambe, MZB 8694, holotype, 100.0 mm SL; Sumatra: Aceh, Alas River drainage.

FIGURE 3. Collection localities of G. ketambe.

FIGURE 1. Pangio lidi; Indonesia: Kalimantan Timur: Sungai Petung Kanan. a, MZB 16528, holotype, 67.2 mm SL; b, CMK 20805, paratype, 57.2 mm SL.

FIGURE 3. Indonesia: eastern Borneo: Petung Kanan river, type locality of of Pangio lidi.

FIGURE 2. Pangio lidi, holotype, MZB 16528, 67.2 mm SL; Indonesia: Kalimantan Timur: Sungai Petung Kanan.

FIGURE 3. Lateral views of: a. Ompok bimaculatus, ZRC 50641, 155.5 mm SL; b. O. siluroides, ZRC 43849, 134.1 mm SL. Images are not to scale.

FIGURE 1. Ompok brevirictus, MZB 16670, holotype, 125.0 mm SL; Sumatra: Aceh, Kluet River drainage.

FIGURE 2. Collection localities of O. brevirictus.

FIGURE 4. Lateral views of heads of: a. Ompok brevirictus, MZB 16670, holotype, 125.0 mm SL; b. O. miostomus, ZRC 45558, 155.2 mm SL; and c. O. siluroides, ZRC 43849, 134.1 mm SL. Images are not to scale.

Classical speciation concepts focus almost exclusively on the evolution of strict reproductive isolation as a prerequisite for speciation. However, there is a growing body of evidence indicating that speciation is possible despite or even triggered by gene flow among populations or species. Previous findings indicate that introgressive hybridizatio...

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...

Adaptive radiations are extremely useful to understand factors driving speciation. A challenge in speciation research is to distinguish forces creating novelties and those relevant to divergence and adaptation. Recently, hybridization has regained major interest as a potential force leading to functional novelty and to the genesis of new species. H...

The Sangkulirang Peninsula in Indonesia's East Kalimantan province on the island of Borneo has been highlighted as a global priority for karst ecosystem conservation. A team of 19 scientists led by The Nature Conservancy and the Indonesian Institute of Sciences conducted a 5-week biological survey of Sangkulirang's karst mountains between July and...

Two new species of bagrid catfishes are described from the Alas River drainage in the province of Aceh in the northern tip of Sumatra. Leiocassis aculeatus resembles L. poecilopterus in having the supraoccipital process in contact with the nuchal plate, but differs from it in having a longer adipose fin (15.8-16.6% SL vs. 12.9-15.0), and longer dor...

Kryptopterus piperatus, new species, is described from the Lembang River drainage in northern Sumatra. It belongs to the K. bicirrhis group of silurid catfishes and differs from all congeners in the group in having a unique combination of the following characters: head width 11.4-12.0 % SL; body depth at anus 22.3-24.3 % SL; eye diameter 20.3-25.3...

Mystus punctifer, new species, is described from the Alas River drainage in Aceh province, northern Sumatra. It can be distinguished from congeners in having the unique combination of the following characters: overall chocolate brown with relatively large and distinct humeral spot (and no other markings on sides of body or caudal peduncle); 4-8 ser...

To test the assumption of the existence of a possible new population of coelacanth in Indonesia, we sequenced the mitochondrial DNA from cytochrome b and 12S rDNA genes, and described the morphological features of the specimen discovered on July 1998. Significant differences in base sequences revealed that the Comorean and the Indonesian coelacanth...

To test the assumption of the existence of a possible new population of coelacanth in Indonesia, we sequenced the mitochondrial DNA from cytochrome b and 12S rDNA genes, and described the morphological features of the specimen discovered on July 1998. Significant differences in base sequences revealed that the Comorean and the Indonesian coelacanth...