The Cichlid Fishes of Lake Malawi, Africa

Abstract of Publication

Kawai, K., N. Yoshikawa, and H. Imabayashi. 2001. Relationships between spot type on male anal fin of Malawian mouth-brooding cichlid fishes and mating behavior. Journal of the Faculty of Applied Biological Science Hiroshima University 40: 27-32.  

Mating behavior was observed on 8 mouth-brooding Malawian cichlid species in aquarium, and was discussed from a viewpoint of the spot type on the male anal fin. The mating behavior for the pair was divided into seven steps; step 1, display; step 2, navigation; step 3, stimulation; step 4, oviposition; step 5, egg collection; step 6, fertilization; and step 7, mimic fertilization. Spots on the anal fin were categorized into four types; oval (Labidochromis caeruleus, Melanochromis auratus and Pseudotropheus zebra), narrow-oval (Aulonocara hansbaenschi), ellipsoidal (Nimbochromis livingstoni) and disappeared (Aulonocara jacobfreibergi, Fossorochromis rostratus and Placidochromis electra). Steps 1 and 3 was [sic] observed for all the species. Step 7 was observed for all the species except for A. hansbaenschi and F. rostratus. Steps 4 to 6 were observed only for N. livingstoni and P. electra. On the other hand, step 2 was observed only for A. hansbaenschi, L. caeruleus and M. auratus, belonging to oval to narrow-oval spot types, suggesting the role of oval-type spots in induction of mating behavior of females.




free hit counters