Im not sure how many gal but its 350L stock is, 2 lombardoi 3-4", 2 electric yellows 4-5", 4 silver dollars i beleive they are adults bout 6", 1 venustus 6", 3 adult convicts, 1 troph 5" 1 cuckoo catfish, 1 large angelfish 5", 1 blue acara 4 1/2" 1 geophagus brasiliensis 6", 1 random striped...