The smallest fish in the world is Paedocypris petrogenetic and was only recently in 2005, fish were discovered in the Indonesian island of Sumatra. that measured size just 7.9mm long and know as Paedocypris was the world’s smallest known vertebrate fish they were adult females of Paedocypris petrogenetic, a member of the carp family.
which has been superseded by a minute for frog from the New Guinean rain forests. she has a partially see-through the body and a reduced head skeleton, and lives in dark tea color waters with an acidity of pH3, which is more than 100 times more acidic than rainwater.
The previous record of history for the smallest fish was held by an 8 mm species of Indo-Pacific goby. in the United Kingdom’s smallest fish is the marine Guillet’s goby, reaching a whopping 24 millimeters in length.
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