英文關鍵字
animal
aquarium
background
breeding
current
ecology
fish
fishery
fishing
flowing
freshwater
incubation
lake
laying
migration
minnow
minnows
natural
nature
river
shad
shallow
spawn
spawning
stream
swim
upstream
water
wildlife
英文關鍵字
animal
aquarium
background
breeding
current
ecology
fish
fishery
fishing
flowing
freshwater
incubation
lake
laying
migration
minnow
minnows
natural
nature
river
shad
shallow
spawn
spawning
stream
swim
upstream
water
wildlife