The life span of fishes has been determined primarily by survival time in public aquaria and by counting the annular marks of otoliths. The fishes with the longest duration of life are deeper-water species, such as rockfishes of the genus Sebastes, some with validated ages in excess of 100 years. The goby Eviota sigillata, maximum length 21 mm, has the shortest published life span, 59 days.
... [Show full abstract] However, other smaller gobies, such as Trimmaton nanus (mature at 10–12.5 mm), the neotenic gobiod fishes of the family Schindleriidae (mature as small as 8.5 mm), and the miniature cyprinid fishes of the genus Paedocypris, (mature as small as 7.9 mm), might be expected to have even shorter life spans. Predation, parasites, disease, and catastrophic environmental events shorten the lives of fishes in nature. We report here the longevity of the following small gobiid fishes in aquaria in Hawai'i: Kelloggella oligolepis, 22 months; Eviota nigriventris, 23 months; Trimma rubromaculatum and T. tevegae, 12–20 months; Priolepis nocturna, 3 years and 3 months; Asterropteryx semi-punctata, at least 11 years, and Gobiodon okinawae, at least 13 years. A table is provided of 15 species of fishes that have lived from 13 to 24 years in the Waikiki Aquarium , Honolulu. The life span of fishes is believed to be related to their adult size, with small species having the shortest duration of life, as we might deduce from mammals by comparing the longevity of a shrew with that of an elephant. While this is true of fishes in general, there are many exceptions. The Dolphinfish (Coryphaena hippurus), which reaches a length of 2.1 m and a weight of 40 kg, has a life span of only four to five years. We will show that some gobiid fishes smaller than 10 cm in total length can live more than 10 years in aquaria, where they are free from predation, and with proper care, from disease. Some early publications on natural history attributed ages as great as 150 years to the Carp (Cyprinus carpio) and 200 years to the Pike (Esox lucius). These records have been shown to be fables (Norman 1949). Flower (1925) quoted Buffon (1769) on the two ways to determine the age of a fish: by counting the annular marks in scales (the denser zones of the concentric rings that represent a period of slower growth) or by recording its life span in captivity. He then reported on the longevity of 42 species of fishes representing