Fill in the table “Comparative characteristics of the main groups of fish”.
October 30, 2020
||Flattened head, powerful teeth, no scales
||Flattened body, bottom organisms
||They live in salty sea water, have a slightly flattened head, an elongated nose
||Sturgeon, sterlet, beluga
||The body is round, laterally compressed, have large round scales
||Salmon, pink salmon, chum salmon
||They have a small head and a light stripe running along the body.
||Burbot, pollock, pollock
||Large powerful teeth, the fin has a five-membered structure
||Have both gill and pulmonary respiration
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