I threw some small pieces of orange in my tank, the fish kind of like it, they seem to get a pucker out of the tart fruit. Is it really OK to add citrus to a tank? What about the citric acids? When they bite in to the meat of the fruit, they shake it really hard like they're convulsing. Is that normal?

When I feed my goldie oranges, I use a veggie clip to hold it in place. The meat of the orange can be difficult for a goldfish to get a hold of and take a bite, so you might want to try cutting it a bit before putting it in. The "convulsions" are likely your fish's attempt to rip a piece off.

You do have to be careful about the acidity of citric fruits. They should never be left in the tank for a very long period of time or they may mess with your pH. It's probably best to only put a little bit in, let your fish chew on it for a while, and then remove it. You could also cut it into small bits and handfeed (I love handfeeding... I get fishkisses all over my hand! :heehee)

My fishes did NOT like oranges & they were very sweet & ripe. Also found out today they do not care for grapes either. Picky little hoovers.

Yup, I tried grapes recently...not good.

The orange pieces I fed today were about the size of peas. They're gone now, they ate em aaaaaalll up! Yummy!

I put some kiwi in a clip the other day ,went to get some milk, came back and it was gone !!!! lotsa vitamin c for them and it is not messy as an orange

This is all I get back when I give my guys oranges. It's like then bare skeleton you get back from piranhas LOL

OMG! That's incredible! While I was feeding today my fish srounged around and found a little orange, they chewed and chewed and eventually spit the pieces out. I don't know if this means they don't like it or they can't swallow it? I gave them little bitty pieces of all fruit.

If I put it in the tank they eat it. Oranges are their favorite.