In fish, brood cycling parental males sometimes eat some or all of their eggs, a behavior termed filial cannibalism. We … experimental group, whereas a control group had fully saturated water. Males showed both full-clutch cannibalism and partial …-clutch cannibalism in both treatments. Giving the males one to three females to spawn with, we found that small clutches were completely …

attract females (nest-opening width, sand volume, male courtship display, displacement fanning, and male size), males that … empty vial. While male courtship, nest building, displacement fanning, and time outside the nest were unaffected, individual … males showed a higher mucus preparation effort inside the nest in the presence of a sneaker male than when alone. We found …

both groups were then transferred to outdoor arenas and retested. Courtship vigor by males, and attractiveness of females …