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can i keep 2 fidller crabs in a 2 gallon plastic tank???if not,how many ghost shrimps can i have in a 10.do either need a way to the surface or need a air pump??.and i also heard fidlers will "wave" to each other or wave their big clwas.will fidlers eat regular fish food???any special requirments,food,light,air,plant,srocks,anything.please give all info and thanks (please do not recomend any other crabs or shrimp,i really love the 2)THANK YOU ALL!!!!!!!!!

o yes and max size???

Fidlers are supposed to be okay in pairs, and some people have good luck with small colonies, but a 2 gal. tank is not big enough for even one of these inverts, even though they don't get much larger than 2.5 inches. These crabs need a lot of space for digging and staking territories. A 10 gal tank would be large enough for maybe one pair, with an additional 10 gallons of space for every additional crab.

Shrimp, on the other hand, will do fine in a 2 gallon tank, and you coul dhave as many as 10 of them, especially if the tank is planted with heat and filtration.

Hoping that there must be a word for everything I mean...