Xiphophorus helleri

Smirnova, G.P. (1967). Dependence of the thermoresistance of Xiphophorus helleri on the amount of consumed food (In Russian). Proceedings of All-Union Conference... 

Most laboratory studies examining the responses of fishes to chemical alarm cues have shown that the anti-predator responses exhibited to conspecific cues are specific to conspecifics and are not generalized responses to any injured fish cue or any novel odor (Chivers and Smith, 1998). Consequently, most of the field tests have used distilled water as the control. However, more recently, several studies now include an unfamiliar heterospecific skin extract (usually swordtail, Xiphophorus helleri) or novel odors, such as morpholine, as additional controls. In some cases the results are somewhat surprising. 

Stolk, A, 1950, The ovarian occlusion apparatus in the viviparous cyprino-donts Lebistes reticulatus (Peters) and Xiphophorus helleri (Heckel), Proc. K. Ned. Akad. Wet., 53 526. 

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