Hardiest Aquarium Fish. While many of the fish listed above are very hardy they all need a certain amount of room. The Rainbow Shiners are hardy cold-water fish who can tolerate aquarium temperatures as low as 50 F which is about 10 C.
The koi carp fish are coldwater fish that are perfect for garden ponds. Snake head is probably the hardiest fish but in an aquarium I would say alligator gar but in a smaller tank probably a catfish like a Raphael mine has been through some stuff and is a. Zebra danios are another hardy schooling fish that can be pretty zippy but I dont recommend them if your tank isnt at least 2ft long.
Top Ten Hardiest Freshwater Aquarium Fish to Keep in a Fish Tank Easiest Fish to Care For Countdown.
Snake head is probably the hardiest fish but in an aquarium I would say alligator gar but in a smaller tank probably a catfish like a Raphael mine has been through some stuff and is a. Guppies are tropical aquarium fish that are most widely distributed in the world. There are many varieties of koi fish as is the case with the goldfish. Make sure the male-to-female ratio is balanced.
