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Fish Saltwater Care: medium Peaceful

Striped Fang Blenny

Meiacanthus grammistes
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Other names: Striped poison-fang blenny, Fang blenny, Meiacanthus grammistes
Group: Marine fish · Family: Blenniidae · Origin: Western Pacific — from southern Japan, the Philippines and Indonesia to the Great Barrier Reef

A blenny recognized by the black lengthwise stripes on its white-yellow body, with venomous teeth in its lower jaw. It swims in open water; peaceful and reef-safe, and captive-bred individuals are available.

Will it suit my tank?

Last updated October 16, 2026

Temperature
24–27°C
pH
8.1–8.4
Adult size
10 cm
Minimum tank size
110 liters
Social structure
Solitary
Swimming zone
Middle
Diet
Carnivore
Breeding
Substrate spawner

Water parameters

Temperature24–27°C
pH8.1–8.4
Recommended range
Considered reef safe

Overview

October 16, 2026 · Suggest an edit

The striped fang blenny is recognized by the black stripes running along its white-yellowish body. In its lower jaw it carries two large grooved teeth connected to venom glands; a predator trying to swallow it spits the fish out once bitten. This defense is so effective that some non-venomous blennies mimic its appearance. Its bite can be painful to humans but is not considered dangerous. Unlike most blennies it swims in open water; captive-bred individuals are available.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 110 liters; open swimming space and rock with holes.
  • Salinity specific gravity 1.023–1.026, pH 8.1–8.4, temperature 24–27°C.
  • Reef-safe; it leaves corals and invertebrates alone.
  • Small holes or empty tubes where it can shelter at night.

Diet

October 16, 2026 · Suggest an edit

Carnivorous; it feeds on plankton. Offer frozen mysis, brine shrimp, copepods and granule food; twice a day.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Peaceful; it can be territorial towards its own species and similarly shaped blennies. Because of its venomous teeth, predators usually stay away from it; even so, it should not be kept with large predators.

Good companions: Clownfish, chromis, cardinalfish, gobies, tangs, cleaner shrimp.

Avoid: Other fang blennies (in a small aquarium), aggressive dottybacks, large predators.

A short profile for this species

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Tank mates

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Should not be kept together

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