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Paedocypris progenetica
Paedocypris progenetica (also known as Indonesian Superdwarf Fish) is a species of tiny cyprinid fish endemic to the Indonesian islands of Sumatra and Bintan where it is found in peat swamps and slow flowing blackwater streams. It was discovered by Singaporean ichthyologist Heok Hui Tan in 2006. He has written a description of the fish along with another species of the same genus called Paedocypris micromegethes.
It is one of the smallest known fish in the world, together with species such as Schindleria brevipinguis, with the females reaching a maximum standard length of 10.3 mm (0.41 in), and the males reaching a maximum st 9.8 mm (0.39 in) and the smallest known mature specimen, a female, measuring only 7.5 mm (0.30 in). It held the record for the shortest known vertebrate until the frog Paedophryne amauensis was formally described in January 2012, and the parasitic males of the anglerfish Photocorynus spiniceps are only 6.2 millimetres (0.24 in) long.The smallest individual of the fish reported mature weighed just 0.7mg, while the largest weighed 5mg.
The fish's diet consists of small planktonic rotifers and cladocerans.
In recent years, they have become popular as pets, but they are considered difficult to care for. These animals live in a pH range of 3.0-4.0 and even with good care, they only live for about 1 year at most.
Due to its size, the fishes' skeleton is very rudimentary. Its spine is made of 33 - 35 vertebrae and it has a roofless skull. The Indonesian Superdwarf Fish displays unique reproductive adaptations, including modified pelvic fins in males, with its survival threatened by habitat destruction.
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Paedocypris progenetica
Paedocypris progenetica (also known as Indonesian Superdwarf Fish) is a species of tiny cyprinid fish endemic to the Indonesian islands of Sumatra and Bintan where it is found in peat swamps and slow flowing blackwater streams. It was discovered by Singaporean ichthyologist Heok Hui Tan in 2006. He has written a description of the fish along with another species of the same genus called Paedocypris micromegethes.
It is one of the smallest known fish in the world, together with species such as Schindleria brevipinguis, with the females reaching a maximum standard length of 10.3 mm (0.41 in), and the males reaching a maximum st 9.8 mm (0.39 in) and the smallest known mature specimen, a female, measuring only 7.5 mm (0.30 in). It held the record for the shortest known vertebrate until the frog Paedophryne amauensis was formally described in January 2012, and the parasitic males of the anglerfish Photocorynus spiniceps are only 6.2 millimetres (0.24 in) long.The smallest individual of the fish reported mature weighed just 0.7mg, while the largest weighed 5mg.
The fish's diet consists of small planktonic rotifers and cladocerans.
In recent years, they have become popular as pets, but they are considered difficult to care for. These animals live in a pH range of 3.0-4.0 and even with good care, they only live for about 1 year at most.
Due to its size, the fishes' skeleton is very rudimentary. Its spine is made of 33 - 35 vertebrae and it has a roofless skull. The Indonesian Superdwarf Fish displays unique reproductive adaptations, including modified pelvic fins in males, with its survival threatened by habitat destruction.