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New Zealand Journal of Marine and Freshwater Research abstractsReproduction in Galaxias fasciatus Gray (Salmoniformes : Galaxiidae)C. L. HopkinsFisheries Research Division, Ministry of Agriculture and Fisheries, Private Bag, Christchurch, New ZealandAbstract A study of the reproductive cycle was made on Galaxias fasciatus Gray from streams on Banks Peninsula, South Island, New Zealand. There was no spawning migration; adults remained in the usual adult habitat to breed. The course of gonad maturation showed that spawning occurred in the autumn, from the end of April to mid-June. Most males matured at 2 years of age and most females at 4 years old. Egg numbers in the females varied from 3800 to 23 600. Males were predominant in age groups 1-4, females in the older age groups. Amongst fish of potential breeding age there was an excess of males. Circumstantial evidence suggested that eggs were laid among piles of water-logged debris lodged in pools and backwaters. The larvae, which are briefly described, probably hatch during floods to be swept quickly downstream to the sea.
New Zealand Journal of Marine & Freshwater Research, 1979, 13 (2): 225-230.
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