Squaretail
Tetragonurus cuvieri
The square tails ( Tetragonurus ), also called Eckschwänze or square tails, are fishes from the order of the Scombriformes. They live in all tropical and temperate parts of the world oceans.
Features
There are very slender, torpedo-shaped elongated fish. Your body is covered with diamond-shaped comb scales that are keeled. The caudal peduncle is long and carries each a keel on each side. Square tails have two dorsal fins, the hard rays of the first shorter than the soft rays of the second. The second dorsal fin is the anal fin directly opposite. Adult animals still have their pelvic fins, which sit forward slightly behind the pectoral fins. Square tails are 50 to 70 inches long.
Fins formula: Dorsal X-XX/10-17, Anal I/10-16
Square tails eat comb jellies, jellyfish and salps. Because the recorded nettle poisons her flesh to be toxic. Young fish live in the protection of jellyfish or salps.
Species
- Tetragonurus cuvieri Risso, 1810.
- Tetragonurus pacificus Abe, 1953.
Fossil record
A fossil Eckschwanz ( Tetragonurus sp.) Is known from the Pliocene of Marecchia ( northern Italy).