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The common name of these fish is related to their bizarre, tubular eyes. The genus name Gigantura refers to the Gigantes , a race of giants in Greek mythology —coupled with the suffix oura , meaning 'tail', thus Gigantura refers to the greatly elongated, ribbon-like lower half of the tailfin that may comprise over half of the total body length.
The Priacanthidae, the bigeyes, are a family of 18 species of marine ray-finned fishes."Catalufa" is an alternate common name for some members of the Priacanthidae.The etymology of the scientific name (prioo-, to bite + akantha, thorn) refers to the family's very rough, spined scales.
The most noticeable characteristic of Pristigenys alta is its very large eyes. This species is blunt, bright red, and ovate, with a flattened, disk-like body. It is commonly about 20 cm long, but can grow to a maximum length of 30 cm. [4] It has rough scales, and large ventral fins.
The tips of the spines of the dorsal fin are black, and it may have a dark red cap above the eyes. There is a variant with a uniformly pale body except for the frontal part. 40 cm (15.7 in) Blue and Yellow grouper: Epinephelus flavocaeruleus: No: 90.0 cm (35.4 in) Blue dot grouper: Cephalopholis argus: No: Deep black to tan fish with blue spots ...
The Atlantic bigeye is a small to medium sized perciform fish. Almost all parts of the fish are entirely reddish-orange, including the eyes. The dorsal fin has 10 spines, and 14 rays. The anal fin has 3 spines and 15 rays. Atlantic bigeye are commonly found at around 14 in. The IGFA world record is 50 cm, or about 20", caught in 2001. [1]
The black cardinal fish is a shallow-bodied fish with large eyes and a blunt snout and slightly projecting lower jaw. The dorsal fin is in two parts and has seven or eight spines and nine to eleven soft rays. The anal fin has two spines and nine soft rays. The general colour of this fish is purplish-brown or black and living specimens are ...
In juveniles, the fins are pale grey to yellow with darker edges, becoming darker overall in adulthood, with the anal and caudal fins yellow to black and the second dorsal fin olive to black. The tip of the second dorsal fin has a distinctive white tip. The bigeye trevally also has a small dark opercular spot on the upper margin. [7] [11]
The eyes of black seadevils are small; the pupil is larger than the lens, leaving an aphakic space. Common among deepsea anglerfish is the strong sexual dimorphism in melanocetids: while females may reach a length of 18 cm (7 in) or more, males remain under 3 cm (1 in). Aside from jaw teeth, males also lack lures. Pelvic fins are absent in both ...