New Zealand Journal of Marine and Freshwater Research abstracts

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Further feral poeciliid fish in New Zealand fresh waters, with a key to species

R. M. MCDOWALL

National Institute of Water & Atmospheric
 Research
P. O. Box 8602
Christchurch, New Zealand
email: R.McDowall@niwa.cri.nz

Abstract  The poeciliid fish, Phalloceros caudimaculatus (commonly referred to as the "caudo"), is recorded from the wild for the first time, occurring in stock-water troughs on a farm near Kamo in Northland, New Zealand. The populations in the stock troughs reputedly came from a nearby stream c. 10 years ago, although a preliminary search has failed to reveal them to be there now. Presence of an additional exotic fish in New Zealand fresh waters is a matter for concern, and requires management. To facilitate recognition of P. caudimaculatus, and its distinction from other poeciliids present here, a diagnosis is provided to enable identification, together with notes on natural history, and a key for the identification of the five species of Poeciliidae now known from natural waters in New Zealand.

Keywords  New Zealand; Poeciliidae; Phalloceros caudimaculatus; caudo; feral population

M99013
Received 23 March 1999; accepted 20 May 1999

PDF file of entire paper: medium quality (1966K); (scanned from paper original: notes about this process)

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