Question

Write down four characters of Osteichthyes and give two examples.

Answer 1

(i) Osteichthyes are marine and fresh water fishes with partly or whole bony endoskeleton.
(ii) Body is generally spindle shaped.
(iii) Skin is either naked or covered with cycloid or ctenoid scales.
(iv) Heart is either two chambered containing one auricle and one ventricle.
Example: Labeo (Rohu) and Synchiropus spledidus (mandarin fish)