Introduction
The pearl gourami is a small (up to 100 mm total length), tropical anabantoid fish native to Southeast Asia. Both sexes show pronounced morphological, color, and behavioral changes with the onset of the breeding season. Only color and body marking changes will be discussed in detail in this report.
Earlier studies by Baerends and Baerends-van Roon (1950) on cichlid fishes; Miller (1964) on the blue gourami, Trichogaster trichopterus; Bar- low (1962) on the Asian teleost Badis badis; and Forselius (1957) on sev- eral species of anabantoid fishes have examined color changes occurring during reproductive cycles and discussed some of the possible implications of these changes. The functions of many of these changes are not well understood and the present study does little to clarify this situation. How- ever, color changes during the reproductive cycle in T. leeri are striking and useful guides in determining the motivational states of the sexual part- ners. These indicators of spawning readiness mav be used to advantage by aquarists, ethologists, and ichthyologists who are interested in the propaga- tion and study of this species.
Introduction
The pearl gourami is a small (up to 100 mm total length), tropical anabantoid fish native to Southeast Asia. Both sexes show pronounced morphological, color, and behavioral changes with the onset of the breeding season. Only color and body marking changes will be discussed in detail in this report.
Earlier studies by Baerends and Baerends-van Roon (1950) on cichlid fishes; Miller (1964) on the blue gourami, Trichogaster trichopterus; Bar- low (1962) on the Asian teleost Badis badis; and Forselius (1957) on sev- eral species of anabantoid fishes have examined color changes occurring during reproductive cycles and discussed some of the possible implications of these changes. The functions of many of these changes are not well understood and the present study does little to clarify this situation. How- ever, color changes during the reproductive cycle in T. leeri are striking and useful guides in determining the motivational states of the sexual part- ners. These indicators of spawning readiness mav be used to advantage by aquarists, ethologists, and ichthyologists who are interested in the propaga- tion and study of this species.
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