Fish and wildlife officials said they may have some new information at the end of this week that could help answer the question, "What's killing the fish in the St. Johns River?"
A health advisory is in effect for the river because of the fish that have been dying over the last few weeks and because of the algae building up.
But some people are still fishing in the river.
One fisherman said he wasn't too concerned about the health advisory, saying he thought the fish would be safe to eat after it was cooked.
Health officials said people shouldn't eat any fish that are in the immediate area of a fish kill.