释义 |
caudal fin in British Englishnounthe tail fin of fishes and some other aquatic vertebrates, used for propulsion during locomotion Examples of 'caudal fin' in a sentencecaudal fin Possible functional advantages to the presence of a caudal fin in the genus are discussed.The spanwise flexibility of caudal fin can increase thrust force with high propulsive efficiency.The caudal fin with 31.25% infection was the single most affected area.The interaction between the caudal fin and the water was explained.In addition, interspecific positive allometry, affecting mainly the caudal fin span, has been detected.Malformations assessed include exogastrulation, caudal fin curvature, axial shortening, edema, and gill atrophy.The detritus-alguivores had a long digestive tract, mouth ventral or terminal and long caudal fin.The most consistent gross findings were marked hemorrhages, erosions of caudal fin, and exophthalmos.The twin-tail showed doubled caudal fin and accumulation of red blood cells in the tail.Morphological and meristic characteristics, notochord flexion degree and caudal fin elements were utilized for identification. |