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The jaws have conical teeth. Typically, tilapia have a long dorsal fin, and a lateral line that often breaks towards the end of the dorsal fin, and starts again two or three rows of scales below. Some Nile tilapia can grow as long as 60 centimetres (2 ft). [12]
The native Mozambique tilapia is laterally compressed, and has a deep body with long dorsal fins, the front part of which have spines. Native coloration is a dull greenish or yellowish, and weak banding may be seen.
According to the chok or divine decrees of the Torah and the Talmud, for a fish to be declared kosher, it must have scales and fins. [ 8 ] The definition of "scale" differs from the definitions presented in biology, in that the scales of a kosher fish must be visible to the eye, present in the adult form, and can be easily removed from the skin ...
Male Percina darters have a row of enlarged caducous scales between the pelvic fins and the anus. Porcupine fishes have scales modified into large external spines . By contrast, pufferfish have thinner, more hidden spines than porcupine fish, which become visible only when the fish puffs up.
Air-Fryer Walnut Crusted Tilapia. Makes: 4 servings / Prep time: 15 minutes / Total time: 30 minutes 2 tablespoons light mayonnaise. 1 tablespoon Dijon mustard. 2 teaspoons lemon juice, fresh. 4 ...
These scales cover the fish's body with little overlapping. They are typical of gar and bichirs. Cycloid scales are small, oval-shaped scales with growth rings like the rings of a tree. They lack enamel, dentin, and a vascular bone layer. Bowfin and remora have cycloid scales.
Oreochromis leucostictus (the blue-spotted tilapia) is a species of cichlid native to Albertine Rift Valley lakes and associated rivers in DR Congo and Uganda. It has now been introduced widely elsewhere East Africa , and is believed to have negative ecological impact, particularly on native tilapias .
In later forms, each pair of fins became ventrally connected in the middle when scapulocoracoid and puboischiadic bars evolved. In rays, the pectoral fins have connected to the head and are very flexible. One of the primary characteristics present in most sharks is the heterocercal tail, which aids in locomotion. [28] Most sharks have eight fins.