neon swallow

The neon swallow ( Pseudomugil furcatus ) is a genus Popondetta of the family Pseudomugilidae described by Gerald R. Allen in 1980. The Pseudomugil furcatus, which originally belonged to the genus Pseudomugil furcatus , was placed into this genus. , Popondetta furcatus , and Popondetta connieae was described as the second species of the genus. This species is restricted to Papua New Guinea from Popondetta to Safia on the Papua Peninsula. Allen believes that the genus Popondetta differs from the genus Pelvicmimus in that its anal fin has a greater number of rays (16-20 vs. 8-12) and does not have an anterior projection in the ventral center of the pelvic girdle. ), and no obvious scale radii. However, the genus name Popondetta was already used in the genus name of insects under the order Hemiptera: Lygaeidae in 1978. According to the rules of the International Nomenclature Convention (Article. 23 of the International code for Zoologizal. Nomenclature), it was published first Therefore, the genus Popondetta should be invalid as a new genus name under the family Mythidae. Therefore, Allen proposed another genus name in 1986, Popondichthys . At the same time, Allen worked with B. Said and W. Ivantsoff of Macquarie University in Sydney, Australia, to study the relationship within the family Amphithidae. Preliminary results suggest that the genus Popondetta may be a genus of Amphibians. Therefore, P. furcatus and P. connieae were returned to the genus P. furcatus in 1989. However, in 1997, Ivantsoff and Allen upgraded the popondetta to a valid genus based on morphological differences, and moved the fork-tailed mullet-like silverfish back into the genus, becoming the only valid fish species in the genus. Still in use.
However, in the aquarium market, neon swallows are still often called by their old scientific name " Pseudomugil furcatus ". The body color of this species is mainly yellow and translucent, the abdomen is orange, the dorsal fin, pectoral fin and anal fin are transparent, but the edges of each fin are bright yellow. The tail fin of the female fish is light yellow, and the pectoral and pelvic fins are transparent, which is not as bright as the male fish.