Florida Gar Care Guide - Aquarium Size, Diet & Breeding

The Florida Gar is a long-bodied freshwater predator with a narrow, tooth-filled snout, an elongated dorsal profile and a powerful tail. Its body is covered in hard, diamond-shaped ganoid scales, giving it a distinctly prehistoric appearance. Olive-brown to greenish colouring above and a paler underside help it blend into weedy, tannin-stained waters.

Florida Gar are native to the southeastern United States, especially Florida and parts of southern Georgia. They inhabit slow-moving rivers, lakes, swamps, canals and seasonally flooded backwaters across the Atlantic and Gulf coastal drainages.

A Florida Gar needs a very large, fully covered aquarium or indoor pond; a practical starting point for one adult is about 2,000 litres, with dimensions of at least 300 × 100 × 75 cm, and more swimming length is strongly preferable. Use powerful but well-guarded filtration, secure the lid against powerful jumps, and leave broad open areas for cruising. Fine sand or smooth gravel, robust rootwork, rocks and hardy aquatic plants can provide structure, but avoid sharp ornaments and clutter that restricts turning space. Juveniles require a plan for a much larger permanent enclosure as they grow.

Up to about 132 cm (52 inches) in the wild; females generally grow larger and heavier than males, while aquarium specimens are often smaller.

Florida Gar are ambush predators that naturally eat fish, crayfish, shrimp and other aquatic animals. Young specimens can be offered appropriately sized frozen or live foods, while larger individuals can take whole fish, prawns and other meaty foods. A varied diet of nutritionally sound, thawed foods is preferable to relying on feeder fish, which can introduce parasites and provide poor nutrition. Feed measured portions and avoid fatty mammalian meats.

Florida Gar should only be housed with very large, robust fish that are too big to swallow and are not aggressive enough to injure them. Suitable companions may include similarly sized, peaceful large catfish, mature large cichlids and other compatible native predators, provided the aquarium is exceptionally spacious. Small fish, shrimp, crayfish and delicate tankmates will be treated as prey, while fin-nipping or highly territorial species should be avoided. Never mix them with fish small enough to fit in their mouth.

Florida Gar are rarely bred in home aquariums because they become very large and require substantial seasonal changes in water conditions. In nature, adults spawn during spring and early summer in shallow, flooded areas with aquatic vegetation. Females scatter adhesive eggs among plants, where several males may release milt over them. The eggs hatch after roughly a week, and the larvae remain attached to vegetation briefly while absorbing their yolk sacs. Do not handle the eggs, as gar eggs are toxic if eaten.

Females are usually larger and more robust-bodied than males. External differences are otherwise subtle, and sex is difficult to determine reliably outside mature fish in breeding condition.