Red fish and purple fish are most important ones, you can get hammers from them which you will need to upgrade buildings, blue fish are good too so can use premium lures to help u get better chance at blue red and purple fillets. green fish are extremely common. you must have Fishing rod bonus above 7 to catch red fish, above 11 and have a chance to catch a 3 fillet red fish
Red fish and purple fish are most important ones, you can get hammers from them which you will need to upgrade buildings, blue fish are good too so can use premium lures to help u get better chance at blue red and purple fillets. green fish are extremely common. you must have Fishing rod bonus above 7 to catch red fish, above 11 and have a chance to catch a 3 fillet red fish