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The skeleton of the head of a perch Parts of a pike's head. 1: liver, 2: gill arch, 3: palate with sharp teeth, 4: in the middle a heart, 5: fragment of spinal cord, 6: brain, 7: spherical lens, 8: scale
Slickheads, also known as nakedheads or smoothheads, are deep water fishes that belong to the family Alepocephalidae.They are most commonly found in the bathypelagic layer, which is approximately 3000m below the surface. [2]
The fish's suckermouth, with its fleshy lips, is located in an inferior position at the bottom of its head, as the fish obtains its food from bottom surfaces. [5] The white sucker is often mistaken for different species of suckers and redhorses , but can be distinguished by the complete lateral line system containing 55–85 small scales. [ 6 ]
The belly is off-white or cream, and the fish has no scales. [5] Additionally, there are darker, brown-black speckles along the entire surface of the fish. The brown bullhead has a dorsal fin that bears a spine, [6] a single adipose fin posterior to the dorsal fin, abdominal pelvic fins, and an anal fin with 21 to 24 rays. The tail is only ...
Illustration of barbels on the head of a fish. The head or skull includes the skull roof (a set of bones covering the brain, eyes and nostrils), the snout (from the eye to the forward-most point of the upper jaw), the operculum or gill cover (absent in sharks and jawless fish), and the cheek, which extends from the eye to the preopercle. The ...
Flowerhorn cichlids are ornamental aquarium fish noted for their vivid colors and the distinctively shaped heads for which they are named. Their head protuberance is formally called a nuchal hump. Like blood parrot cichlids, they are hybrids that exist in the wild only because of their release. Flowerhorns first emerged for sale on the aquarium ...
Gold red and white Lionhead goldfish. The tremendous hood or headgrowth and fat cheeks of lionheads give them a facial appearance similar to canine puppies. [2] The "wen" (Chinese term for headgrowth) fully covers the head, cheeks and gill plates of the fish.
Many species are found in estuaries and the open ocean in the Indo-Pacific, especially most parts of Australia where they are popular sport and table fish. Flathead can grow at least 1 metre (3.3 ft) in length and 18 kilograms (40 lb) in weight, [1] with dusky flathead (Platycephalus fuscus) being the biggest, although fish this size are seldom ...