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Breeding Fire eels in captivity is very hard, but not impossible. Distinguish the sexes can be difficult, but a mature female is plumper than the male. When spawnings have occurred in captivity, the parents have been longer than 50 centimeters (20 inches). The Fire eel is a plant spawning fish that should be kept in a large and well planted aquarium. Keep the pH and dH at optimal levels and let the water temperature become a little higher than normally, from 27 to 29° C (81 to 84° F). The eggs are translucent and the female Fire eel will place roughly 800 to 1200 eggs in floating plants. The eggs are around 12 millimeters (1/20 inch) in diameter. Newly hatched Fire eels must be feed very small live food. Over feeding the fry is a common reason behind extensive Fire ell fry death. When kept on a suitable diet, the fry will grow very fast