The world's smallest fish depends on the measurement used.
Based on minimum
standard length at maturity the main contenders are ''
Paedocypris progenetica
''Paedocypris progenetica'' is a species of tiny cyprinid fish endemic to the Indonesian islands of Sumatra and Bintan where it is found in peat swamps and blackwater streams. It was discovered by Singaporean ichthyologist Heok Hui
Tan. He ha ...
'' where females can reach it at ,
[Scholastic news online:''The World's Smallest Fish?'' by: Ezra Billinkoff-]
Retrieved February 3, 2006
Retrieved January 25[ the stout infantfish (''Schindleria brevipinguis'') where females reach it at and males at ,][ and '']Photocorynus spiniceps
''Photocorynus spiniceps'' is a species of anglerfish in the family Linophrynidae. It is in the monotypic genus ''Photocorynus''.
The known mature male individuals are 6.2–7.3 millimeters (0.25-0.3 inches), smaller than any other m ...
'' where males can reach it at , but are attached to the far larger females.[ and the two '' Leptophilypnion'' sleeper gobies are less than .][ A level of uncertainty about the full size range exists for some of these, as only a few specimens have been measured.][
Little or no data is available on weight of most of these, but at less than it is likely that the stout infantfish (''Schindleria brevipinguis'') is the smallest if using this feature.][
]
List of smallest fish in the world
See also
*List of largest fish
Fish vary greatly in size. The whale shark and basking shark exceed all other fish by a considerable margin in weight and length. Fish are a paraphyletic group that describes aquatic vertebrates while excluding tetrapods, and the bony fish that of ...
*Smallest organisms
The smallest organisms found on Earth can be determined according to various aspects of organism size, including volume, mass, height, length, or genome size.
Given the incomplete nature of scientific knowledge, it is possible that the small ...
References
{{DEFAULTSORT:Smallest fish
Lists of fishes
Lists of superlatives