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Fish Saltwater Care: medium Semi-aggressive

Goldentail Moray

Gymnothorax miliaris
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Other names: Golden tail moray, Goldentail moray eel
Group: Marine fish · Family: Muraenidae · Origin: Atlantic — from Bermuda and South Florida through the Antilles to southeastern Brazil; Mid-Atlantic islands such as Cabo Verde, Ascension and St. Helena

A relatively small moray with a dark brown body covered in small yellow spots and a golden-yellow tail tip. It grows to 50–70 cm; it is hardy and active during the day too, but it eats small fish and shrimp.

Will it suit my tank?

Last updated October 16, 2026

Temperature
24–27°C
pH
8.1–8.4
Adult size
60 cm
Minimum tank size
400 liters
Social structure
Solitary
Swimming zone
Bottom
Diet
Carnivore
Breeding
Egg scatterer

Water parameters

Temperature24–27°C
pH8.1–8.4
Recommended range
May escape, needs a lid Eats small fish Eats shrimp

Overview

October 16, 2026 · Suggest an edit

The goldentail moray is one of the most common and most easily recognized morays of the Caribbean: its dark brown body is covered with yellow spots that are very small on the head and grow larger and merge towards the tail; the tip of the tail is always light-colored, usually golden yellow. It stays small compared with most moray species and also leaves its lair to roam during the day. Opening and closing its mouth is breathing, not aggression. Specimens are wild-collected.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 400 liters; the tank length should be at least twice the moray's length.
  • Escape prevention: Even the smallest gap in the lid must be closed; morays escape through cable holes.
  • Pipes, caves and firmly secured rocks where it can hide its body; salinity 1.023–1.026, pH 8.1–8.4, temperature 24–27°C.
  • Reef-safe with caution: It leaves corals alone, but eats shrimp, crabs and fish that fit in its mouth.

Diet

October 16, 2026 · Suggest an edit

Carnivorous. Chopped fish, shrimp, squid and mussels are offered with tongs or a feeding stick; adults are fed 2–3 times a week. Do not hand-feed; its bite causes deep wounds.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Relatively calm; it usually gets along with fish too large to fit in its mouth. When hunting it sometimes moves together with other predatory fish.

Good companions: Medium and large fish: tangs, large angelfish, foxface, triggerfish, groupers, large wrasses.

Avoid: Ornamental shrimp, crabs, small fish, an aquarium without a lid.

A short profile for this species

The Goldentail Moray page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026