Green wolf eel
Congrogadus subducens · Pseudochromidae
Also known as Wolf blenny
Intermediate
An eel-shaped pseudochromid for a FOWLR tank; hides all day, hunts anything smaller.
In short: A green wolf eel needs at least 300 L (79 US gal), water at 24–28 °C (75–82 °F) and pH 8.1–8.4. It is aggressive, usually kept singly, and rated intermediate to keep.
- Minimum tank
- 300 L (79 US gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 8.1–8.4
- Adult size
- 45 cm (17.7 in)
- Group size
- 1+
Reef & marine husbandry
- Specific gravity
- 1.023–1.026
- Reef safety
- Reef safe
- With corals
- Ignores coral but knocks over frags.
- With inverts
- Eats shrimp and crabs.
- Minimum in a mixed reef
- 300 L (79 US gal)
- Minimum fish-only (FOWLR)
- 300 L (79 US gal)
- Aggression
- Predatory; escape artist.
- Feeding
- Two or three times a week.
Care requirements
- Minimum tank volume
- 300 L (79 US gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 8.1–8.4
- Hardness
- 8–12 dGH
- Lifespan
- 5–10 years
- Diet
- Carnivore — shrimp, squid, chunks of marine fish.
- Care level
- Intermediate
Origin & habitat
- Native region
- Indo-West Pacific
- Water type
- Saltwater
- Biotope
- Inshore rock and rubble
- Natural conditions
- Caves and crevices, tight lid, moderate flow.
Behaviour & stocking
- Temperament
- Aggressive
- Minimum group
- 1 fish
- Swims
- Bottom
- Good tank mates
- Large tangsTriggersLarge angels
- Avoid
- Small fishAll ornamental shrimp
Breeding & difficulty
- Breeding difficulty
- Advanced
- Sexing
- Not reliably sexable.
- Notes
- Rarely bred.
- Common ailments
- Marine ichEscaping
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