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02 June 2008

Morfology dan organ function

Classification
Weber and de Beaufon (1929), Schuster and Djajadiredja (1952), also Hayvard and Ryland (1995) classificate in :

Phyllum : Chordata; Subphyllum : Euchordata; Class : Ostheichthyes; Subclass : Actinoptrygii; Infraclass : Teleostei; Superordo : Elomorpha; Ordo : Anguilliformes; Family : Anguillidae;
Genus : Anguilla; Species : Anguilla spp.

Morfology and organ fuction
Eel is unique. Differ with the most of fishes. The most of fishes have short in body. It has length, with ratio length and high twenty ratio one. It’s like snake. But eel has head, body, and tail. Head is short, body is very length, and tail is short. If it’s cated in the centeral has ratio high and wide are one ratio one.

Head are three side. Cover gills, noises, eyes, and mouth in the head. Cover gills is small, close the back of head. A couple big eyes is in above of head, with black in round, and brown in the side, like ring. A couple little hole noise in the front of eyes. Mouth in the front of head, it splits the most of head. It seem to widely.

The most of fishes has five fins. But eel only four. These are pectoral fin, caudal fin, annal fin, and dorsal fin The eel hasn’t ventral fin. Pectoral fin is length from the back of head connected to caudal fin, and annal fin. Only pectoral fin is separated of them. It appear assum of Indonesian that the eel has ears. It also which distinguis the eel and the swamp eel. The fourth of fin have
soft spike.

Althought, the eel is like the swamp eel but the eel has skin. It’s very small, and it can’t be seen by eyes, but if it touched hard. Skin eel close the all of body. It only seen under microscop.