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The single dorsal fin is positioned far back from the head, larger than and above the retrorse anal fin. Females have large, highly distensible stomachs which give the ventral region a flabby appearance. In life, black seadevils are a dark brown to black. The skin is extremely soft and easily abraded during collection or even by simple handling.
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 black jack has characteristic black fins and scutes. The black jack is a large fish, and is confidently known to grow to a length of 1 m [8] and a weight of 17.9 kg, [21] although is more common at lengths under 70 cm. [15] At least one source asserts a fish of 2.21 m has been reported, [22] which if true would make the black jack the second largest species of carangid behind the ...
The first dorsal fin has six to nine independent, short, stout, sharp spines. The family name Rachycentridae, from the Greek words rhachis ("spine") and kentron ("sting"), was inspired by these dorsal spines. The mature cobia has a forked, slightly lunated tail, which is usually dark brown. The fish lacks a swim bladder. The juvenile cobia is ...
Blackfin tuna are a warmer-water fish, preferring water temperatures over 20 °C (68 °F). [6] The females release eggs into the water column to be fertilized by sperm. Fertilization of their eggs produces pelagic larvae which can be found on the surface of the water all the way to depths of 164 feet.
A specimen of Aphanopus carbo damaged during capture that has lost much of its characteristic black skin. The black scabbardfish has an extremely elongated body; its body height is about one-eighth of the standard length, which is up to 1.1 m (3.6 ft). The snout is large with strong, fang-like teeth. The dorsal fin has 34 to 41 spines and 52 to ...
The skipjack tuna (Katsuwonus pelamis) is a perciform fish in the tuna family, Scombridae, and is the only member of the genus Katsuwonus. It is also known as katsuo, arctic bonito, mushmouth, oceanic bonito, striped tuna or victor fish. It grows up to 1 m (3 ft) in length. It is a cosmopolitan pelagic fish found in tropical and warm-temperate ...
In cross section, the fish is compressed and the dorsal head profile clearly concave. The single dorsal and ventral fins have spines and soft rays; the paired pectoral and pelvic fins have soft rays only; and the caudal fin has soft rays and is truncated and rounded. Barramundi are salt and freshwater sportfish, targeted by many.