Reproductive behaviour, colouration of adult fish and development to hatching of Melanotaenia nigrans and Melanotaenia splendida inornata were studied under laboratory conditions during summer and autumn (February to early May). At 26°C ± 1°C, all observed pairs of fish spawned each day during this period. The egqs of the two species differed in size as well as in the number and colour of oil droplets. The rate of embryonic development under identical conditions of temperature and light was found to be almost parallel in the two species. However, the melanophore pattern of the developing embryos was found to be sufficiently different to identify each species. At hatching, the larvae were well developed, with functional mouth and well formed pectoral fins.
Reproduction and early stages of development in two species of Australian rainbowfishes, Melanotaenia nigrans (Richardson) and Melanotaenia splendida inornata (Castelnau).
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L. E. L. M. Crowley, W. Ivantsoff; Reproduction and early stages of development in two species of Australian rainbowfishes, Melanotaenia nigrans (Richardson) and Melanotaenia splendida inornata (Castelnau).. Australian Zoologist 1 January 1982; 21 (1): 85–95. doi: https://doi.org/10.7882/AZ.1982.007
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