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Fusiform, a body shape common to many aquatic animals, characterized by being tapered at both the head and the tail [1] Fusiform, a classification of aneurysm; Fusiform bacteria (spindled rods, that is, fusiform bacilli), such as the Fusobacteriota; Fusiform cell (biology)
Fish have a variety of different body plans. At the broadest level, their body is divided into the head, trunk, and tail, although the divisions are not always externally visible. The body is often fusiform, a streamlined body plan often found in fast-moving fish. Some species may be filiform (eel-shaped) or vermiform (worm-shaped).
Shenacanthus is roughly 2.2 cm (0.87 in) long, with a fusiform body shape like most other jawed fish. It shares many characteristics with chondrichthyans, specifically the posteriorly retracted gills, a lack of dermal bones around the jaw and small diamond-shaped scales.
Clupeidae is a family of clupeiform ray-finned fishes, comprising, for instance, the herrings and sprats.Many members of the family have a body protected with shiny cycloid (very smooth and uniform) scales, a single dorsal fin, and a fusiform body for quick, evasive swimming and pursuit of prey composed of small planktonic animals.
As fry, this fish is 5 mm (3 ⁄ 16 in) long, and some of the larger eastern blacknose dace can reach slightly over 100 mm (3.9 in). They tend to live for two or three years and grow continuously during this period. [4] They have a fusiform body shape and the mouth is in a subterminal position.
The body form of roosterfish is elongate and fusiform in shape. They have wide bands of simple teeth lining the inside of their pointed head. Their dorsal fin always has seven spines and a separate section of 25 soft rays, the anal fin has two spines and 15 soft rays, the pectoral fin has 16 soft rays that are very long and curved.
The black ruff has a robust fusiform body shape and can grow to a length 150 cm (60 in). The dorsal fin has five spines and 37 to 41 soft rays, the anal fin has three spines and 20 to 24 soft rays. The bases of these fins have a fleshy sheath clad with scales that partially conceals the rays.
The species can grow up to 9 cm (3.5 in). They have a fusiform body shape with silvery sides with blue and green lateral iridescent stripes and transparent fins. Their pectoral and pelvic fins are in the abdominal region. They have a pointed snout with a terminal mouth position. The caudal fin is angled inwards to make a forked shape.