Results 271 to 280 of about 100,387 (317)
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1975
New Zealand has a small freshwater fish fauna, by any standard of comparison. A precise enumeration is not yet possible as some taxonomic problems remain to be resolved, but there are about 30 native species. Eight families are represented, none of which is endemic.
R. M. McDowall, A. H. Whitaker
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New Zealand has a small freshwater fish fauna, by any standard of comparison. A precise enumeration is not yet possible as some taxonomic problems remain to be resolved, but there are about 30 native species. Eight families are represented, none of which is endemic.
R. M. McDowall, A. H. Whitaker
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Geriatric Freshwater and Marine Fish
Veterinary Clinics of North America: Exotic Animal Practice, 2020As pain management finally becomes accepted for this last of the vertebrate taxa, fish medicine is finally reaching the sophistication of other vertebrates. The diseases of aging fish in captivity therefore need to be addressed. The degenerative organ/tissue changes and neoplasias of fish deserve the same diagnosis and treatments of their terrestrial ...
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Freshwater fishes of northern Australia
Zootaxa, 2017Northern Australia is biologically diverse and of national and global conservation signicance. Its ancient landscape contains the world’s largest area of savannah ecosystem in good ecological condition and its rivers are largely free-flowing. Agriculture, previously confined largely to open range-land grazing, is set to expand in extent and to focus ...
Pusey, Bradley J. +6 more
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The visual pigments of freshwater fishes
Vision Research, 1967Abstract Dark-adapted retinae from 59 species of freshwater fishes were extracted in digitonin and analyzed for visual pigment content using the method of partial bleaching. Results of this survey, combined with the investigations of others, show that the classic view of visual pigment distribution among vertebrates is erroneous.
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Freshwater fishes of the Altiplano
Aquatic Ecosystem Health & Management, 2007Fisheries of the Altiplano, dating from 1500 to 2000 BC, are active in the Andean inter-montane plateau that extends from Ancash, Perú, to Antofagasta, Chile, at altitudes above 3600 m. The ancient and remote nature of these systems has merited the inclusion of many areas as National Parks and RAMSAR sites.
Vila Pinto, Irma +2 more
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Exotic fishes and freshwater fish diversity
Zoos' Print Journal, 2000The freshwater aquatic biodiversity is depleting alarmingly due to the introduction of exotic species and other anthropogenic activities. The indiscriminate transfer of exotic fishes has brought about a wide array of problems including extirpation of indigenous species. The exotics compete with the indigenous species for food, habitat and may even prey
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FRESHWATER FISH IN ISTRIAN PENISULA
1995In the ichthyological research carried out from 1981 to 1993, twenty-two taxa (species, subspecies) and one hybrid (Salmo trutta m. fario x S. marmoratus) from 10 families (Siluridae, Anguillidae, Esocidae, Salmonidae, Cyprinidae, Cyprinodontidae, Poecilidae, Gasterosteidae, Cottidae, Gobiidae) were recorded in fresh waters of the Istrian Penisula ...
Leiner, Srečko +2 more
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