formosa is not as commonly kept in aquaria as these species

The locals used to call the pupfish charalito, a generic name for all small fish.
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It is not an expensive fish for sushi but perfectly marinated Kohada is called "Yokozuna of Edomae-Sushi" (King of Tokyo-style sushi) thus many sushi lovers in Tokyo says the value of sushi restaurant can be evaluated by the preparation of this fish. Kohada is in the herring family and the name of this fish changes as the fish grows just like yellowtail change the name as the size gets larger. For yellowtail, the price goes up as it grows but for Kohada it is the opposite. The smallest fish ("Shinko") is the most expensive because as it gets larger, Kohada can get very bony and hard to eat as sushi. This fish name changes from "Shinko", "Kohada", "Nagazumi" then "Konoshiro". When "shinko" is in season in early spring, it usually sells at the market price of around 1kg for 25000yen - which is about $125/pound!
Apr 20, 2017 - The world's smallest fish is the Paedocypris progenetica (a big name for such a tiny creature)
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The smallest fish in the world lives among the coral reefs of the Indo-west Pacific. The scientific name of this fish is Trimmatom nanus. It grows to only 1 cm in length. Least Killifish/Dwarf Livebearer (Heterandria formosa): Known by many names, this unique little fish was once thought to be the smallest vertebrate in the world!
Photo provided by FlickrMaximum size: an Ember Tetra can grow to be about 0.75
Photo provided by FlickrPandaka is a genus of fish in the goby family, Gobiidae, native to fresh, brackish and marine waters of Asia and the western Pacific Ocean. Some species in the genus are among the smallest fish in the world; the male P. pygmaea can be just 9 millimeters long at maturity. The genus name is from the Sanskrit pandaka.
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(known as the least killifish, mosqu or midget livebearer) is a species of livebearing fish within the family . This is the same family that includes familiar fishes such as and . is not as commonly kept in aquaria as these species. is one of the smallest fish in the world (7th smallest as of 1991), and is the smallest fish found in North America. Despite the common name "least killifish", it belongs to the family and not to one of the families.The stout infantfish supplants the dwarf goby as the new record holder of the world's smallest vertebrate (animal with a backbone). The scientists developed the animal's name (scientific name Schindleria brevipinguis) to characterize its thick, or "stout," structure as compared with other infantfishes. "Infant" describes the uncommon early-stage features of the animal. It is transparent without pigmentation, except for its eyes, and lacks teeth, scales and certain characteristics typical of other fishes.

Scientists note that the stout infantfish's unusual appearance corresponds with its extremely short lifespan, which is believed to be approximately two months. Many features characteristic of a larval stage of development appear even though it is fully mature.

"It's interesting that these animals experience several generations each year," said Watson, a fishery biologist. "This suggests that they could evolve quite quickly as well. They live in a specialized habitat that could be threatened by global warming or human development, but they may have the ability to evolve as fast as their environment changes."

Philip Hastings, the curator of the Scripps Marine Vertebrates Collection, says the identification of the stout infantfish is another demonstration that scientists do not yet possess a complete inventory of marine animals, even for relatively well-studied groups like fishes, and in fact many important species remain undiscovered.

"Anytime a scientist identifies an 'extreme' in the world it's important," said Hastings. "Think about the whole envelope of life. Most of us systematists describe things that fill in the dots in the middle of the envelope. This new discovery is pushing the edge, increasing the size of the envelope. It's important because it demonstrates that we're still expanding our knowledge of the limits of the diversity that's present on this planet and there are still significant new discoveries to be made. We need to continue doing what we can to explore and describe the diversity before it's gone, in addition to focusing our efforts on protecting biodiversity.""Bass" is a popular name applied to many fish that aren't really bass, but people call them "Bass" anyway, particularly the Black Bass (Smallmouth and Largemouth) which are actually . Shown here are the real bass (even though one of them is called "Perch"), with links to some of the "not actually a bass" fish. The now has its own page.
The world’s smallest fish is the Paedocypris progenetica (a big name for such a tiny creature). This fish is about 7.9mm. That’s less than one third of an inch! These teeny little fish were discovered about 10 years ago in the swampy waters of Indonesia. They have clear bodies that look like glass.