WebNov 13, 2024 · A crayfish's defining characteristics that make it part of the subclass Malacostraca include: Head appendages used for feeding, except first antennae which are used for sensory activities ... WebFeb 12, 2024 · One of the most notable features of fish are their fins - many fish have a dorsal fin and anal fin (near the tail, on the underside of the fish) that provide stability. They may have one, two or even three …
Anatomy of a Fish - University of Florida
WebMar 31, 2024 · fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and … Class Actinopterygii (ray-finned fishes), in existence since the Early Devonian, is … Fish are a kind of animal that lives in water. Fish have lived on Earth for more than … lungfish, (subclass Dipnoi), any member of a group of six species of living air … bony fish, (superclass Osteichthyes), any member of the superclass Osteichthyes, … mosquito, (family Culicidae), any of approximately 3,500 species of familiar … Ken Hammond/U.S. Department of Agriculture. The word fish is often used … The whale shark (Rhincodon typus) and the basking shark (Cetorhinus maximus), … General features. lizard body structures. Most reptiles have a continuous external … amphibian, (class Amphibia), any member of the group of vertebrate animals … skate, (order Rajiformes), in zoology, any of numerous flat-bodied cartilaginous … WebDigestive Glands: The name of digestive gland of prawn is hepatopancreas,which is orange coloured and occupies most of the regions of Cephalothorax. It is a large gland … how are rhythmic gymnasts so skinny
From Fish to Mammals: Understanding the Similarities and …
WebJul 20, 2015 · Snout. The mouth-area of the fish. Nape. The forehead-area before the dorsal fin begins. Lateral line. A row of highly sensitive nerves aligned usually along the … WebGeneral characteristic: Ectothermic Lateral line Two chambered heart Gills used for respiration No external ears No eye lids WebEach variety is adapted to its own specific habitat. The shape of the fish helps the aquarist to determine the fish habitat. For example, surface dwelling fish have a reversed mouth and a compressed back. Tall … how are rf values useful