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The banded snake eel (Myrichthys colubrinus) mimics the highly venomous banded sea krait so successfully that most predators leave it alone - and many beginning aquarists are afraid to handle it. The eel itself is non-venomous. Black-and-white banded body, slim form, and largely nocturnal. Lives buried in sand with only head exposed during daylight. A unique display species for keepers who appreciate biological mimicry.
Native range: Indo-Pacific. The snake eel is a member of the Ophichthidae (Snake eels) 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: Live + frozen small fish, shrimp, crab. 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: Large reef fish that ignore the burrowed eel; corals..
Avoid: Small fish (will be eaten), small shrimp + crabs (eaten), other eels in small systems..
Not bred in captivity.
Mimicry-driven keeper anxiety; jumping; eats cleanup crew shrimp and crabs.
The banded snake eel (Myrichthys colubrinus) mimics the highly venomous banded sea krait so successfully that most predators leave it alone - and many beginning aquarists are afraid to handle it. The eel itself is non-venomous. Black-and-white banded body, slim form, and largely nocturnal. Lives buried in sand with only head exposed during daylight. A unique display species for keepers who appreciate biological mimicry.
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 Snake Eel 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 12-18 years. The banded snake eel (Myrichthys colubrinus) mimics the highly venomous banded sea krait so successfully that most predators leave it alone - and many beginning aquarists are afraid to handle it.
Primary diet: Live + frozen small fish, shrimp, crab. 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 Snake Eel reaches about 36-48 inches (90-120 cm) as an adult and lives 12-18 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.
Mimicry-driven keeper anxiety; jumping; eats cleanup crew shrimp and crabs. Keeper note: Deep sand substrate (4-6") for burrowing. Snake eels are non-venomous but their mimicry is so good that even experienced aquarists hesitate. Reassure handlers with documentation. Morays are exceptionally strong jumpers and escape artists.
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