Overview
- Native to the Indo-Pacific region, commonly found near coral reefs and lagoon habitats.
- Distinctive slender body with alternating bright blue and black horizontal stripes.
- Known for its unique behavior of mimicking cleaner wrasses to approach other fish and occasionally nip at scales or fins.
- Recommended for intermediate to advanced aquarists due to its specialized behaviors and dietary needs.
Feeding
- Carnivorous; naturally feeds on mucus, scales, and skin of other fish in the wild.
- Accepts frozen foods such as mysis shrimp, brine shrimp, small marine preparations, and finely chopped seafood.
- Multiple small feedings daily are ideal to maintain optimal health and coloration.
- Variety and consistency in diet essential for nutritional balance and health.
Habitat
- Prefers moderately sized aquariums (minimum 30 gallons [114 L]) with ample hiding spaces and live rock structures.
- Stable, mature aquarium environment crucial for success.
- Provide numerous hiding spots, caves, and crevices to mimic their natural habitat.
- Moderate water circulation and effective filtration necessary for maintaining excellent water conditions.
Fish Care
- Optimal water temperature: 72-78°F (22-26°C).
- Recommended pH: 8.1–8.4; specific gravity: 1.025–1.026 (about 33–35 ppt).
- Sensitive to water parameter fluctuations; regular monitoring and consistent aquarium maintenance important.
- Regular checks for signs of marine diseases and parasites; prompt action ensures optimal health.
Compatibility
- Semi-aggressive; suitable for aquariums with larger, robust fish species.
- Reef-safe with caution; may occasionally nip at other fish.
- Recommended tank mates include larger clownfish, tangs, dwarf angelfish, and other semi-aggressive marine species.
- Should be monitored closely for compatibility, particularly with peaceful or slow-moving tank mates.
Aquarium Behavior
- Highly active and curious swimmer, often exploring rockwork and open areas.
- May display aggressive mimicry behavior by approaching other fish to nip scales or mucus.
- Providing ample hiding spots and clear territories helps minimize aggressive interactions.
- Interactive with aquarium caretakers, often engaging actively during feeding sessions.
Frequently Asked Questions
Why is the Bluestriped Fangblenny rated semi-aggressive?
Rather than eating whole prey, it darts at other fish and bites off small pieces of skin, mucus and scales. Its tankmates are the target, so it is not a good choice for a community of slow or delicate fish.
How does the Bluestriped Fangblenny trick other fish?
It is an aggressive mimic. Juveniles and some adults copy the look of the bluestreak cleaner wrasse, and orange-yellow adults resemble female anthias. Disguised like this, it gets close enough to nip. It can switch between mimic and normal colors within minutes.
Does the Bluestriped Fangblenny have venom?
Its fangs carry a mild venom with a numbing effect, which helps it bite and get away. The bite still injures the victim, and the fish has been known to nip a keeper's hand too.
How big does the Bluestriped Fangblenny get?
Up to about 5 in (13 cm). It is slim and quick, darting out from shelter and back again.
What size tank does a Bluestriped Fangblenny need?
At least 30 gallons (114 L) for a single fish, and larger if it shares the tank. Lots of rockwork with holes and crevices gives it hiding spots and breaks up sight lines for other fish.
What does a Bluestriped Fangblenny eat in an aquarium?
It is a carnivore. Feed meaty foods like mysis, krill and brine shrimp regularly. Keeping it well fed won't stop its biting habit, but it does help.
Is the Bluestriped Fangblenny reef safe?
It leaves corals and invertebrates alone, so a reef is possible, but this page rates it reef safe with caution. The caution is about fish. In a reef full of peaceful fish, its nipping is the real risk.
What tankmates suit a Bluestriped Fangblenny?
Robust, active fish that can shrug off a nip are the best option, or keep it in a species tank. Avoid slow swimmers, fish with long fins, and fish that look like it, such as cleaner wrasses. Keep only one, since it does not tolerate its own kind.
What colors does the Bluestriped Fangblenny come in?
Adults range from black to orange-yellow, always with two narrow blue stripes from the snout to the base of the tail. The orange-yellow phase resembles the harmless female Scalefin Anthias, which helps it get close to other fish.
Where does the Bluestriped Fangblenny live in the wild?
It is found in the Indo-Pacific, from the Red Sea and South Africa east to the Line, Marquesas and Society Islands, and from southern Japan to Lord Howe Island. It lives on coral reefs and in lagoons from about 3 to 130 ft (1 to 40 m) deep.