Amarsipus carlsbergi

Amarsipus carlsbergi is the only species of the family Amarsipidae from the order of Scombriformes. The genus name Amarsipus points to the lack of revenge towards bags (size: ἀμάρσιπος "a" = no; " marsipos " = bag). The Style epithet was given in honor of the Carlsberg Foundation, in their journal Dana reports the description has been published.

Features

The characteristic difference to the other Stromateoiden is the lack of revenge bags. It is unclear whether this lack is primitive or derived. As with some other Stromateoiden fully adult animals are still unknown, ie you do not know how big they are. The fact that the juveniles described by Richard Haedrich 1969 are among the Stromateoiden, he recognized from their skin ( mucus ) channel system whose pores are scattered all over the body. The maxillary teeth are in one row, are small and curved inward. On the vomer are only 3 or 4 of the palatine are tiny. The gill rakers (19-22 on the first sheet ) are fairly long, strong and flattened. There are six Branchiostegalradien available.

Fins formula: D1 IX -XII, 22-27 D2, A (I? ) / 27-32, C 17 (-18 ). The caudal fin is forked stiff and deep. The pectoral fins are rounded and far- ventral turned in, the ventral fins small, throat constantly for juveniles, later breast constantly. The lateral line is developed only in the tail section. The small round scales fall off pretty easily. At the top of the gill cover is only beschuppt. There are 46-48 vertebrae present.

The shape is elongated (similar to the Tetragonuridae, low first dorsal fin ). The brown, somewhat translucent juvenile fish are quite common in epipelagial of the tropical Indian and Pacific Oceans. The largest specimen (212 mm long) was caught at night in 1988 at a depth of a maximum of 130 m. About the biology of the fish is not known.