0
The three classes of fish are (scientific name/common name):
Agnatha/Jawless or No Jaw
Chondrichthyes (chon-dri-ik-thees)/Cartilaginous (cart-e-la-ga-nis)
Osteichthyes (os-t-ik-thees)/Bony
Pronunciation in parenthesis
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoClass Agnatha: (Lamprey and Hagfish) General Characteristics: * Absence of jaws. * These organisms lack the paired fins (pelvic and pectoral). * Skeleton made of cartilage. * Round eel-like body with a compressed caudal fin. * Soft skin devoid of scales. * They lack a swim bladder and gill covers (operculum). * 7 gill slits on each side of the head. * The lamprey are parasitic and the hagfish are scavengers. * Ectothermic ( animals that cannot control their body temperature). * External fertilization. Oviparous ( egg laying) * Marine and fresh water species are found. * Lateral line * Two chambered heart * Gills used for respiration * No external ears * No eye lids Class Chondrichthyes: ( Sharks, Rays, and Skates). General Characteristics: * Skeleton made of cartilage. * Body covered with triangular Placoidscales. * Ventral,subterminal mouth with several rows of triangular teeth. * Large caudal fin with the dorsal section larger than the ventral one. * Paired fins ( pectoral and pelvic), are stiff and nonflexable. * They lack a swim bladder. * Ectothermic * Internal fertilization. Ovoviviparous ( developing egg kept inside the female for protection and does not live off of the parent). * Marine organisms only. * Lateral line * Two chambered heart * Gills used for respiration * No external ears * No eye lids Class Osteichthyes: ( Tuna, Carp, Salmon, and Sturgeons). General Characteristics: * Skeleton made of bone * Lateral line * Two chambered heart * Operculum covering the gills. * Swim bladder * Ectothermic * Paired fins made of rays and spines,or lobed fins lacking the rays and spines. * Various types of scales (ctenoid,ganoid, or cycloid). * Marine and fresh water species. * Gills used for respiration * External fertilization. Spawning. Oviparous. * No external ears * No eye lids.
Wiki User
∙ 13y agoJawless Fish
Cartiliganous Fish
Bony Fish
Wiki User
∙ 12y agoThe major groups of fishes are that they can reproduce twice a day without any undeveloped process and the ink that Is incite of it's gills are common to there species
Wiki User
∙ 12y agoJawless fish, Bony fish, cartilageious fish
Wiki User
∙ 15y agoSame as other organisms, by their characteristics. (...unless you mean smoked, fried. poached, etc..)
Wiki User
∙ 13y ago1. Chondrichthyes- cartilaginous fish- sharks and rays
2. Ostiechthyes- bony fish-
Add your answer:
Earn +20 pts
Fish swim in groups called what?
Groups of fish are called a school of fish or a shoal of fish. example: The school of fish swam upstream.
Are fish in a flock?
1.fishes are mostly "schools" (groups of fish) a "flock" is a group of birds. 2.yes they travel together, depends on the species 3.if i did not exactly answer your question please tell me
Do clown fish migrate?
Clownfish do not migrate. There are various reasons that they do not.
Will a zebra fish eat a beta fish's fins?
Quite possibly. My female beta ate my male beta, so it wouldn't be that weird if a zebra fish did. Another Answer: Zebra fish are "fin nippers" and while they can be kept in community tanks, they are best kept in groups of 3 or more. Beta fish shouldn't be kept in a community tank.
Why do the fish at the aquarium always seem to be swimming in the same direction?
Probable because they are schooling fish. Schooling fish stay together in groups so that it is harder for predators to get at them I think. Some schooling fish actually have to stay together in groups or else they will get sick, so if you have, or are going to get a tank, make sure you get enough. Or, they might not be schooling fish, and might just be scared!
How many groups of fish are there?
3 types of fish. Cartilage, Boney, and Jawless.
What were the three major groups of animals?
The answer to this question is, the three major groups of animals are the worms,fish,and corals they are the main type of animal except for the coral. the coral is something that is presented in the ocean that some fish live and hide inside and they are the main type of fish habitat in the ocean.
What are the 3 main groups of antidepressants?
MAOIsTricyclicsSSRIs
What were the 3 main Indian groups of Venezuela?
cookies!
What are the three main groups of vascular plants?
The 3 main groups of seedless vascular plants are: ferns, horsetails and club mosses.
What are the 5 main fruit groups?
Grains, rice Fruits Vegetables Meat, fish, nuts Dairy
How many groups of vertebrates are there animals?
There are 5 main classes: Mammals Birds Reptiles Amphibians Fish
What are the 3 main groups of rocks?
Igneous, sedimentary, and metamorphic
What is the main nutrient supplied by fish?
Omega 3
How many Religious groups are there?
The 3 main religious groups are: -Christianity -Judaism (Jewish) -Islamic The previous answer is not correct. The religions listed above are the Abrahamic Religions and not the main religious groups of the world. There are literally hundreds of thousands of religious groups, and possibly thousands of "main" religious groups.
What are the main six food groups?
The six main food groups are staples, food from animals, fats and oils, vegetables, legumes, and fruits.
Fish swim in groups called what?
Groups of fish are called a school of fish or a shoal of fish. example: The school of fish swam upstream.
