Midwater spawning inHaplochromis chrysonotus (Boulenger) (Teleostei: Cichlidae) in Lake Malawi |
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| Authors: | David H Eccles Digby S C Lewis |
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| Institution: | (1) Present address: Institute for Freshwater Studies, Rhodes University, 6140 Grahamstown, South Africa;(2) Fisheries Research Unit, P.O. Box 27, Monkey Bay, Malawi |
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| Abstract: | Synopsis
Haplochromis chrysonotus, a semipelagic shoaling cichlid from Lake Malawi, has been observed spawning in open water up to ten metres above the substratum. It is suggested that open water spawning without the establishment of a substratum-based territory eliminates competition with other species for breeding space and that it may be a stage in the evolution of a totally pelagic mode of life. |
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| Keywords: | Mouth brooding Breeding behaviour Pelagic lifestyle Courtship Evolution |
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