WIchthyologyWAmphibious fishWBait ballWBait fishWBottom feederWBubble nestWDeep sea fishWDemersal fishWDiversity of fishWEel life historyWEgg case (Chondrichthyes)WElectroreceptionWFishWFish anatomyWFish developmentWFish locomotionWFish migrationWFish reproductionWFishkeepingWForage fishWHydroacousticsWIchthyology and GISWIchthyoplanktonWFish intelligenceWJuvenile fishWLepidophagyWLeptocephalusWPaedophagyWPassive electrolocation in fishWPelagic fishWPredatory fishWSaltwater fishWSharkWShoaling and schoolingWSleep in fishWSpawn (biology)WSpawning triggerWStandard weight in fishWWalking fish