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The caudal fin, which connects directly to the dorsal fin, is the fish's primary means of propulsion. Although not a particularly fast species, P. bichir lapradei is capable of achieving quick bursts in pursuit of its prey (usually by folding all of its fins tightly against its body, and vigorously thrusting its caudal fin).
The redfin pickerel, like other fish of the Esox genus, is well adapted to sprint predation. [3] The posterior positioning of the unpaired fins is testament to this, the dorsal fin lining up with the anal fin, and the ventral more rearward than would be found on other fish body types.
Head of the pacific viperfish. The Pacific viperfish (Chauliodus macouni), is a predatory deep-sea fish found in the North Pacific. [1] [2] It is reported as being either mesopelagic [1] or bathypelagic, with diel vertical migration to shallower waters. [2]
ventral (underneath) Pectoral fins: distinct not distinct Tail large caudal fin whose primary function is to provide main forward propulsion varies from thick tail as extension of body to a whip that can sting to almost no tail. Locomotion: swim by moving their tail from side to side Guitar fish and sawfish have a caudal fin like sharks
Piscivorous (preys on cave-dwelling fish) 80 cm. Toxic if it exceeds 1.5 kg and fished in Mauritian coastal waters. [1] Rainbow runner (Carangue saumon) Olive green or blue on upper part, white on lower part. Olive or yellow fins. The term "Rainbow" in the name is quite fitting and aptly describes the changing colours of that fish.
These fish are best kept with live or frozen feed and they easily outgrow the tank within eight to ten months. An aquarium with the minimum diameter of 6 by 3.5 feet (1.8 by 1.1 m) and 300 US gallons (1,100 L; 250 imp gal) is suggested as a bare minimum but 400–800 US gallons (1,500–3,000 L; 330–670 imp gal) is the best way to go. [ 9 ]
Actinopterygii (/ ˌ æ k t ɪ n ɒ p t ə ˈ r ɪ dʒ i aɪ /; from Ancient Greek ἀκτίς (aktis) 'having rays' and πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish [2] that comprise over 50% of living vertebrate species. [3]
The tucan fish has a pale-silver body, with bright-yellow ventral fins (hence its other common name); the rest of its fins are some mixture of yellow and red, usually with a reddish tail fin. [5] In terms of size, it reaches 21.4 cm SL. [1] This makes it one of the larger members of the genus Chalceus, outsized only by the pinktail chalceus.