Will gold fish be a way to keeping the water from going green with algea?


also, i would be afraid to have clams because the larvae will be parasitic to the goldfish.

Goldfish create waste which feeds suspended algae. While they may eat some attached algae, especially if not fed, they cannot physically eat suspended algae. Clams can eat suspended algae but their larvae do live in the gills of fish. I don't have clams.

Algae-fix, a popular algicide (which I use - and it works!)... says on the label that it will kill crustaceans - so there goes your clams, crawfish, crabs, etc.

There's no problem is you don't use the AlgaeFix. While it's safer than other algaecides, I avoid them all in my ponds with animals. AlgaeFix is said to kill crustaceans which include crayfish (aka crawfish) and shrimp (I had some ghost shrimp in my pond years ago). They could not tell me when I e-mailed them if it kills mollusks which include snails and clams. I wouldn't chance it myself.

i live in nj

are there types of shrimp in can have year round thriving in my pond - or crabs?

There are some shrimp (not sure about crabs) that could probably withstand the temperatures. I tried ghost shrimp but didn't find any in the spring. It may be that they simply got eaten. I have never heard from someone who keeps shrimp in their pond all the time so I won't say it works for sure.