Peculiar feeding behavior of Asterorhombus intermedius in an aquarium

• Published in: Gyoruigaku zasshi Vol. 45; no. 1; pp. 47 - 50
• Main Authors: Shirai, Y. (Awashima Marine Park, Numazu, Shizuoka (Japan)), Kitazawa, H
• Format: Journal Article
• Language: English; Japanese
• Published: The Ichthyological Society of Japan 25.05.1998
• Subjects: ACUARIOS; ALETAS (PEZ); ALIMENTACION; ALIMENTATION; AQUARIA; AQUARIUM; BEHAVIOUR; COMPORTAMIENTO; COMPORTEMENT; FEEDING; FINS; NAGEOIRE; PLEURONECTOIDEI; セイテンビラメ; 摂餌行動; 攻撃的擬態; 背鰭第1軟条の回転運動
• ISSN: 0021-5090; 1884-7374
• DOI: 10.11369/jji1950.45.47

The feeding behavior of Asterorhombus intermedius was describedfrom aquarium observations. When frozen krill placed in the tank had descendedto the bottom, the fish would approach it to within. 10 cm, at that point lifting its first dorsal-fin ray to an angle of 45°, before returning it to its original position viaa sideways movement to an angle of 45° from the vertical plane. On completion of the fin movement, the fish continued to move toward the food, suddenly darting to it over the final 1.5 cm. The rotary motion of the first dorsal-fin ray of A. intermedius appeared to have a significant role in that species' feeding behavior.