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Most batoids have a flat, disk-like body, with the exception of the guitarfishes and sawfishes, while most sharks have a spindle-shaped body. Many species of batoid have developed their pectoral fins into broad flat wing-like appendages. The anal fin is absent. The eyes and spiracles are located on top of the head.
The polka-dot batfish is a bottom-dwelling fish that can measure up to 380 mm (15 in) from head to tail. It is a broad, dorso-ventrally flattened, arrow-shaped fish similar in appearance to a ray. The pelvic fins are located further forward than the broad, pectoral fins which flare out on both sides, supported by arm-like stalks.
The surface of the fish facing away from the sea floor is pigmented, often serving to camouflage the fish, but sometimes with striking coloured patterns. Some flatfishes are also able to change their pigmentation to match the background, in a manner similar to some cephalopods. The side of the body without the eyes, facing the seabed, is ...
The cobia (Rachycentron canadum) (/ ˈ k oʊ b i ə /, KOH-bee-ə) is a species of marine carangiform ray-finned fish, the only extant representative of the genus Rachycentron and the family Rachycentridae. Its other common names include black kingfish, black salmon, ling, lemonfish, crabeater, prodigal son, codfish, and black bonito.
The fringed filefish is a laterally flattened fish with a deeply keeled body and a dewlap on the underside. [2] It typically grows to a length of 10 to 14 cm (4 to 6 in), with a maximum length of 20 cm (8 in). The eyes are large, the snout is short and pointed, and the mouth is small, with strong teeth.
The back of the fish is olive-green, sides are silvery and shade to white towards the belly. [2] The fish may have six to seven distinctive lateral horizontal stripes. Lips are thin. [2] The mullet has no lateral line. A common length is about 50 centimetres (20 in), and its maximum length is 100 centimetres (39 in). [2]
The fish is flattened laterally and swims and rests on one side. During development, its eyes usually migrate to the right side of the fish and what appears to be its upper surface is in reality its right side. In about thirty percent of individuals, its eyes move to the left and the left side becomes uppermost.
The brill (Scophthalmus rhombus) is a species of flatfish in the turbot family (Scophthalmidae) of the order Pleuronectiformes.Brill can be found in the northeast Atlantic, Black Sea, Baltic Sea, and Mediterranean, primarily in deeper offshore waters.