All living actinopterygians except bichirs and reedfishes (Order Polypteryformes) also have branching rays in unpaired fins. Single dorsal fin. Some fishes, such as salmons and catfishes, have an ...

It had a large slice taken out of its dorsal fin, the prominent fin ... the group of fish that includes sharks, rays, and skates. Had the fin been fully amputated, the paper noted, it probably ...

The typical dorsal fin is a triangular-shaped piece of skin wrapped around muscles and bony spines or rays that sits on a ...

The first letter stands for the fin, so D here stands for dorsal. Other letters, such as A for anal and P for pelvic, are also used. Roman numerals, such as XII, refer to the number of spinous rays in ...

The dorsal fin, with 8 rays, is short and located at mid-body, above the pelvic fins. Paired anal fins are short and attached low on the body. The coloration is typically olive green to silvery white.

Next to the blue whale, the fin whale is the second largest mammal in the world. They have a distinct ridge along their back behind the dorsal fin, which gives it the nickname "razorback.” Fin whales ...

The caudal fin is squared-off, and the dorsal fin has 11 spines and 15-17 rays. The preopercule is rounded without the presence of a notch, which distinguishes it from the gag grouper (Mycteroperca ...

narrower head and body inferior (sub-terminal) mouth small functional spine at the base of the tail purple sheen to the upper body (in life only), and white tip to the dorsal fin. The spine-tailed ...

When the spiny dorsal fin is pulled erect, the soft dorsal fin remains relaxed. Each of 3 bony anal fin spines are of different lengths and are arranged in ascending order. The anal fin usually has 11 ...

Australoheros autraniAustraloheros autrani is distinguished from congeners by a combination of: 12 caudal vertebrae, lacking markings on the sides of the head, 9"10 anal-fin rays, 10 pairs of ribs, 25 ...

And they are some of the only venomous fish in UK waters. They spend most of their lives buried in the sand, but when disturbed, they shoot up their black dorsal fin in defence, injecting a painful ...