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aqua International Journal 1(2)

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COMPLETE ISSUE

Volume 1, Issue 2 – August 1994

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COMPLETE ISSUE

Volume 1, Issue 2 – August 1994

D. D. Sands: Crypsis in Corydoras (Pisces: Siluriformes, Callichthyidae), pp. 13-20

Abstract

Cryptic pattern sharing amongst a number of sympatric species of Corydoras has yet to be fully understood. The possible development of pigment patterns alongside crypsis behaviour if discussed. Laboratory research details the behaviour of Corydoras adolfoi Burgess, 1982, and Corydoras imitator Corydoras species. Nijssen & Isbrücker, 1983, sympatric in a tributary of the Upper Rio Negro, Brazil. Data, based on observations of combined species groups has shown that both freeze in the presence of a predator model or a live predator. Predator-prey reactions are recorded for both species when they are together and grouped with allopatric.

P. Kaspiris, A. Argyriou and A. Vertsiotis: Food of Hygophum benoiti (Pisces: Myctophidae) in Korinthiakos Gulf (Greece), pp. 21-24

Abstract

The present study examines the diet of Hygophum benoiti (Cocco, 1838) from specimens collected in May and July 1990 in the Korinthiakos Gulf. This mesopelagic fish migrates during the night towards the surface where zooplankton is more abundant and from which this species is feeding.

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