How/what to feed a flounder in QT?

HumbleFish

Dr. Fish
Premium Member
Anyone here have experience quarantining flounders?? I currently have one in QT (with sand), and I've tried target feeding him chunks of LRS, PE mysis, etc. but no dice.

Any advice would be appreciated.
 
Most of them are ambush predators who go after live fish or shrimp.
My only actual experience is with juveniles of the European flounder (Platichthys flesus), European plaice (Pleuronectes platessa), and common sole (Solea solea) which I caught myself on the German North Sea coast. I fed them live baby sand shrimp (Crangon crangon) and Mysis (both also self-collected) but they would also take frozen and flakes after a while.
Depending on the size of your flounder you could try baby mollies or any other suitable feeder fish and if you can get them, live feeder shrimp.
I also remember that they liked a lot of flow which usually triggered their feeding reflex.
Also, many flounders are nocturnal and sleep during the day. So, if yours doesn't eat during the day you may try your feeding attempts late in the evening or during the night.

Which species do you have?
 
Hogchoker (Trinectes maculatus). I got it to eat PE mysis once. My biggest problem is figuring out where it's buried.
It takes a little practice but once you know what to look for they are not too hard to find. Eyes, mouth, and the gill exhaust opening are never really fully covered with sand and once you know the pattern it's not just easy to find but you should also be able to tell which way it lies.

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"... They mainly feed on small aquatic insects and invertebrates. ..."
"... preferring live food such as brine shrimp, Daphnia, mosquito larvae, and Tubifex worms. In the wild, they feed mainly by sifting tiny organisms (white sandworms in salt and brackish water, insect larvae in fresh) out of sand and mud. ..."

Based on this I would suggest to order some California bloodworms, tubifex, or start a few little mosquito cultures (= buckets with water) in the backyard. Just don't wait too long to harvest the mosquito larva so that they won't go through metamorphosis and hatch as bloodsuckers.
You might also want to think about setting up a daphnia culture. It's not too difficult and they are a great live food even for full saltwater fish.

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