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The above scheme is the one most commonly encountered in non-specialist and general works. Many of the above groups are paraphyletic, in that they have given rise to successive groups: Agnatha are ancestral to Placodermi, who again have given rise to Osteichthyes, as well as to Acanthodii, the ancestors of Chondrichthyes.
Brotula barbata, commonly known as the bearded brotula, Atlantic bearded brotula, or sugarfish, is a species of cusk-eel in the genus Brotula. It lives in the Atlantic Ocean, in depths of up to 300 meters. Its coloring ranges from olive-brown to red-brown, and it grows up to be around 50 centimeters. It has a carnivorous diet, and it is oviparous.
The bearded seal is unique in the subfamily Phocinae in having two pairs of teats, a feature it shares with monk seals. Bearded seals reach about 2.1 to 2.7 m (6.9 to 8.9 ft) in nose-to-tail length and from 200 to 430 kg (441 to 948 lb) in weight. [5] The female seal is larger than the male, meaning that they are sexually dimorphic.
These fish can display homing behaviour and are normally found no deeper than the lower limit for the growth of green algae, around 20 metres (66 ft). They are predatory fish and the major part of their diet is crustaceans but they will eat polychaetes, gastropods and small fish, they have also been recorded consuming algae. The five-bearded ...
Examples of non-fish species are seabirds, and marine mammals and reptiles, such as dolphins, seals and sea turtles. Incidental mortality can be contrasted with bycatch, which is a general term for the catch of all fish and non-fish species other than the targeted species.
Pseudancistrus barbatus, [1] commonly known as the bearded catfish, is a species of catfish in the family Loricariidae. It is native to South America , where it occurs in the basins of the Oyapock , the Mana River , the Maroni , the Suriname River , the Courantyne River , and the Essequibo River .
Sarcopterygii (/ ˌ s ɑːr k ɒ p t ə ˈ r ɪ dʒ i. aɪ /; from Ancient Greek σάρξ (sárx) 'flesh' and πτέρυξ (ptérux) 'wing, fin') — sometimes considered synonymous with Crossopterygii (from Ancient Greek κροσσός (krossós) 'fringe') — is a clade (traditionally a class or subclass) of vertebrate animals which includes a group of bony fish commonly referred to as lobe ...
Batomorphi is a clade of cartilaginous fishes, commonly known as rays, this taxon is also known as the superorder Batoidea, but the 5th edition of Fishes of the World classifies it as the division Batomorphi. [2]