Description:
Combination of basslets (fairy vs. blackcap basslets) presented to predator in aquarium tank: (1) GRLO.sm_GRME.lg = small fairy vs. large blackcap; (2) GRME.sm_GRLO.lg = small blackcap vs. large fairy; (3) GRLO.sm_GRME.sm = small fairy vs. small blackcap; (4) GRLO.lg_GRME.lg = large fairy vs. large blackcap