SCITECH DAILY: Even though mosquitofish and guppies are known to be cannibalistic in captivity, it is very improbable that they would engage in cannibalism in the wild. Instead, the few instances of cannibalism in these fish are probably the result of an intense struggle for food. The results of a recent study led by researchers … Continue reading NO ROOM TO DIE: Captivity can drive fish to cannibalism, uncommon in nature