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Snowflake moray , Echidna nebulosa in Kona , Island of Hawaii , Hawaii , United States

Snowflake moray

A speckled marine eel found in Indo-Pacific reefs.

Photo: Brocken Inaglory, CC BY-SA 3.0, via Wikimedia Commons

The snowflake moray is a scaleless marine eel native to the Indo-Pacific and eastern Pacific. It grows up to one metre long and lives in shallow rocky habitats. This hardy species is popular in saltwater aquariums due to its distinctive pattern and adaptability.

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  • Grows up to 100 cm but commonly 50 cm
  • Found in Indo-Pacific and eastern Central Pacific
  • Lives in shallow reefs and seagrass beds
  • Popular hardy species in saltwater aquariums
  • Diet consists mainly of crustaceans

What it is

The snowflake moray is a marine eel belonging to the family Muraenidae. It features a blunt white snout and a body covered in yellowish, brown, and black speckles that resemble clouds. A dorsal fin runs along its entire length. The eel lacks scales and secretes mucus to help it slide through tight spaces. Two yellow tubular nostrils protrude from its snout, aiding its strong sense of smell which compensates for poor eyesight. Adults typically reach 50 centimetres but can grow to 100 centimetres.

Where it lives

This species inhabits the Indo-Pacific region, extending from the eastern coast of Africa and the Red Sea to Micronesia and Hawaii. It is also present in the eastern Central Pacific, ranging from southern Baja California in Mexico down to Costa Rica and northern Colombia. The eel prefers shallow environments such as seagrass beds with rock rubble, intertidal reef flats, and tide pools. It resides at depths between one and 48 metres.

How it lives

Snowflake morays are carnivores that primarily eat crustaceans. They possess small blunt teeth suited for crushing shells rather than tearing flesh. Like other morays, they have pharyngeal jaws in their throat to help process food. Their vision is weak, so they rely on a heightened sense of smell to locate prey. They are solitary hunters that hide in holes during the day. In captivity, they may consume small fish like damselfish but generally leave corals alone.

Breeding and life cycle

The reproductive habits of this eel include being an unconfirmed protogynous hermaphrodite. This biological trait means individuals may change sex during their lifetime. Specific details about spawning seasons or egg laying in the wild are not detailed in the provided text. In captivity, these eels can live for fifteen years or more, suggesting a relatively long lifespan for a marine ornamental species.

Snowflake moray
A drawing made by EveryFish from what this page says. It is a diagram, not a picture of the real fish.

Fish and people

Aquarists value the snowflake moray for its hardiness and striking appearance. It requires a tank larger than 20 gallons with a secure lid to prevent escape. While reef safe regarding corals, it poses a threat to shrimp, crabs, and lobsters. Keepers must avoid feeding it freshwater fish to prevent liver disease. Compatible tankmates include large aggressive fish like lionfish and triggerfish. Handlers should exercise caution as the eel can inflict a severe bite.

I've been trying to beef up my moray portfolio; here's a keeper. These are pretty common on the reef, and daylight hunters, but they're fast, and hard to photograph. Then there's this one, shy as a stripper doing a pole
I've been trying to beef up my moray portfolio; here's a keeper. These are pretty common on the reef, and daylight hunte. Photo: Steve Dunleavy, CC BY 2.0, via Wikimedia Commons
Snowflake moray , Echidna nebulosa in Kona, Big Island of Hawaii
Snowflake moray , Echidna nebulosa in Kona, Big Island of Hawaii. Photo: Brocken Inaglory . Original uploader was Brocken Inaglory, CC BY-SA 3.0, via Wikimedia Commons

Questions people ask about Snowflake moray

What does the snowflake moray eat?

Its diet consists mainly of crustaceans. In captivity, it accepts meaty foods like krill, shrimp, and octopus. Freshwater feeder fish should be avoided as they can cause liver disease.

Is the snowflake moray safe for reef tanks?

It is considered reef safe and will not bother corals. However, it is not safe for shrimp, crabs, or lobsters. It may also eat very small fish such as damselfish.

How large do snowflake morays get?

They can reach a maximum length of 100 centimetres. However, the common size observed is around 50 centimetres. In captivity, they require a tank of at least 40 to 50 gallons when full grown.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Snowflake moray", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.

Like Snowflake moray

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Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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