List of Fish

All aquarium trade fish may be kept without a permit except species categorically non-exempt pursuant to 321 CMR 9.01(3), and except that the following species are prohibited without a permit: (a) Grass Carp or White Amur ( Ctenopharyngodon idella ) (b) Piranha ( Pygocentrus spp. and Serrasalmus spp.) (c) Rudd ( Scardinius erythrophthalmus ) (d) Walking Catfish ( Clarias spp. and all members of the family Clariidae ). Notwithstanding the above, the fathead minnow ( Pimephales promelas ) may be kept without a permit as a pet or for sale as a pet, but require a permit when sold as bait fish pursuant to 321 CMR 4.09.