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FishbeginnerSaltwater

Tailspot Blenny

Ecsenius stigmatura

AnimaliaChordataActinopterygiiBlenniidae

📍 Philippines, Indonesia

Ask Finn

One of the most popular reef blennies — mottled tan with a characteristic black tail spot and expressive eyes. Grazes on algae and is generally reef-safe with corals. Full of personality.

Size2.5"
Min Tank20g
peaceful
Zonebottom

Care Guide

Diet

Tailspot blennies are primarily herbivorous and should be fed a diet rich in algae and vegetable matter. Offer high-quality spirulina flakes or algae wafers daily, supplemented 2-3 times weekly with frozen mysis shrimp or small frozen foods. They will naturally graze on algae growth in the tank, which should be encouraged by maintaining moderate algae levels.

Behavior

This blenny is a bottom-dweller with an inquisitive, personable temperament that makes it popular in reef tanks. It spends most of its time grazing on rocks and substrate, occasionally perching on corals or décor while observing its surroundings with expressive eyes. Generally peaceful with other fish and reef-safe with corals, though it may be territorial toward other blennies in smaller tanks.

Breeding

Breeding tailspot blennies in captivity is difficult and rarely achieved in home aquariums. They require specific environmental triggers and pair bonding that are challenging to replicate. Most specimens in the hobby are wild-caught, and successful captive breeding is not well-documented.

Common Diseases

Ich (Marine Ich)

Symptoms

White spots on body and fins, rapid breathing, lethargy, rubbing against rocks

Treatment

Raise temperature gradually to 28-29°C, maintain excellent water quality, use copper-free treatments or hyposalinity if necessary; quarantine infected fish

Bacterial Infections

Symptoms

Torn fins, lesions on body, cloudy eyes, loss of appetite, color fading

Treatment

Perform frequent water changes, improve water quality, use antibiotic treatments if severe; ensure adequate nutrition and low stress

Parasitic Infections

Symptoms

Excessive scratching, visible parasites, weight loss, labored breathing

Treatment

Quarantine affected fish, use appropriate antiparasitic medications, maintain pristine water conditions; may require freshwater dips

Nutritional Deficiency

Symptoms

Faded coloration, lethargy, poor growth, weakened immune response

Treatment

Provide varied diet with quality spirulina, algae wafers, and occasional frozen foods; ensure adequate natural algae growth in tank

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Quick Facts

pH
8.1–8.4
diet
herbivore — algae, spirulina, mysis
maxSize
2.5 inches
minTankSize
10 gallons
temperature
75–82°F (24–28°C)

Temperature

75–82°F

24–28°C

Stats

Community tips0
Kept by0 hobbyists