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The leopard moray (also called undulated moray) is a large Gymnothorax with bold leopard-spot patterning across a yellow-green body. One of the more aggressive medium-large morays, demanding careful tank-mate selection and a substantial 180+ gallon FOWLR system. Striking pattern and active feeding behavior make it a popular display species for keepers willing to handle the aggression.
Native range: Indo-Pacific. The leopard moray is a member of the Moray (Muraenidae) family. Most specimens in the US trade are wild-caught from collection points in their native range and shipped through Indo-Pacific or Atlantic marine wholesalers. Wild-caught morays often arrive with internal parasites and shipping stress - a 4-week quarantine in a separate system with prazi and metronidazole prophylaxis is the standard reef-keeper protocol before display introduction.
Tank size: 180 gallons is the practical minimum for a single adult. Substrate should be marine sand 2-4 inches deep - fine grain to prevent abrasion. Hardscape should provide multiple cave structures, PVC pipe segments, and overhangs that allow the eel to choose its preferred resting position. Lighting can be standard reef LED; morays do not require special light spectrum. Filtration should be oversized - morays are messy eaters and produce significant nitrogenous waste. A skimmer rated for at least 1.5x the actual tank volume is the standard for moray-housing FOWLR systems.
The lid is non-negotiable. Morays are exceptionally strong jumpers and escape artists. A 1cm gap is enough for an adult specimen to find and exploit. Hood-style covers work; rimless tanks need custom acrylic or glass cut to seal completely.
Primary diet: Frozen silversides, krill, squid, chopped fish. Morays are obligate carnivores. Feed 2-3 times per week for adults, daily for juveniles. Use feeding tongs rather than dropping food - morays learn to associate tong tips with food and develop reliable feeding responses within 1-2 weeks. Variety matters: rotate between silversides, krill, squid, chopped scallop, and occasional whole shrimp for nutritional completeness. Avoid feeder goldfish - they carry thiaminase that destroys vitamin B1 and leads to long-term neurological problems.
Safe: Adult large reef predators: large angels, peaceful triggers, large tangs..
Avoid: Small fish, small inverts, conspecific morays in tanks under 240 gallons..
Not bred in captivity.
Aggression; bite injuries; tank outgrowth; cohabitation conflict.
The leopard moray (also called undulated moray) is a large Gymnothorax with bold leopard-spot patterning across a yellow-green body. One of the more aggressive medium-large morays, demanding careful tank-mate selection and a substantial 180+ gallon FOWLR system. Striking pattern and active feeding behavior make it a popular display species for keepers willing to handle the aggression.
Tank size: 180 gallons is the practical minimum for a single adult. Substrate should be marine sand 2-4 inches deep - fine grain to prevent abrasion. Hardscape should provide multiple cave structures, PVC pipe segments, and overhangs that allow the eel to choose its preferred resting position. Lighting can be standard reef LED; morays do not require special light spectrum.
The Leopard Moray is rated advanced difficulty on this care sheet. It needs a tank of at least 180 gallons, a temperature of 74-82°F (23-28°C) and salinity of 1.024-1.026 SG. Adults reach about 36-48 inches (90-120 cm) and live 15-20 years. The leopard moray (also called undulated moray) is a large Gymnothorax with bold leopard-spot patterning across a yellow-green body.
Primary diet: Frozen silversides, krill, squid, chopped fish. Morays are obligate carnivores. Feed 2-3 times per week for adults, daily for juveniles. Use feeding tongs rather than dropping food - morays learn to associate tong tips with food and develop reliable feeding responses within 1-2 weeks. Variety matters: rotate between silversides, krill, squid, chopped scallop, and occasional whole shrimp for nutritional completeness.
The Leopard Moray reaches about 36-48 inches (90-120 cm) as an adult and lives 15-20 years with good care. Tank size: 180 gallons is the practical minimum for a single adult. Substrate should be marine sand 2-4 inches deep - fine grain to prevent abrasion. A 1cm gap is enough for an adult specimen to find and exploit.
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