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Fish fin. Ray fins on a teleost fish, Hector's lanternfish. (1) pectoral fins (paired), (2) pelvic fins (paired), (3) dorsal fin, (4) adipose fin, (5) anal fin, (6) caudal (tail) fin. Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin ...
External anatomy of a bony fish (Hector's lanternfish): 1. operculum (gill cover), 2. lateral line, 3. dorsal fin, 4. adipose fin, 5. caudal peduncle, 6. caudal fin, 7. anal fin, 8. photophores, 9. pelvic fins (paired), 10. pectoral fins (paired) Internal anatomy of a bony fish. Fish anatomy is the study of the form or morphology of fish. It ...
Fish in the order Gymnotiformes possess electric organs along the length of their bodies and swim by undulating an elongated anal fin while keeping the body still, presumably so as not to disturb the electric field that they generate. Many fish swim using combined behavior of their two pectoral fins or both their anal and dorsal fins.
Gymnotus carapo. Linnaeus, 1758. Despite the name, the Electric Eel is a type of knifefish. The Gymnotiformes / dʒɪmˈnɒtɪfɔːrmiːz / are an order of teleost bony fishes commonly known as Neotropical knifefish or South American knifefish. They have long bodies and swim using undulations of their elongated anal fin.
Redtail surfperch are a deep bodied fish, (i.e. oval in sideview), that are compressed (i.e. slender) from side to side, most often observed in the 8 to 11 inch lengths. [2] The body is light colored, white to silver, with vertical marks or bars and red or pink fins (e. g. dorsal, anal and tail). The vertical marks begin as bars when young and ...
The colour is bright red on the upper body, pale on the lower body with pink pelvic fins. The anal fin is white at its base while the pectoral and dorsal fins are yellowish. [8] This fish has a maximum published total length of 70 cm (28 in), although a fork length of 27.6 cm (10.9 in) in males and 20.4 cm (8.0 in) in females is more typical. [3]
Dorsal fin of a shark. A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom.Many species of animals possessing dorsal fins are not particularly closely related to each other, though through convergent evolution they have independently evolved external superficial fish-like body plans adapted to their marine environments ...
The dorsal and anal fin of the fish are marked with black and yellow: specifically, the anal fin is hyaline (glass-like appearance), with a black outer margin, the anterior three or four rays being an intense, acrylic lemon-yellow in hue, while the dorsal fin is principally black with a yellow central patch.