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Phantom Blenny
Ecsenius bicolor
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📖 Wikipedia / Wikimedia Commons
Striking bicolor blenny with a sharp split right down the middle — front half dark blue-black, rear half vivid orange-yellow. Perches on rockwork and darts out for food. Completely reef-safe algae grazer. Hardy and bold with a big personality for its size. One of the most eye-catching small fish available.
CARE
Beginner
AGGRESSION
Low
MAX SIZE
4"
⚠ ADD WITH CAUTION
· Tank needs 1 more month of maturity
💰 BUDGET PICK
VALUE
WOW FACTOR
TYPICAL PRICE
~$15–25
Bold two-tone coloration, reef-safe, hardy. One of the best value blennies in the hobby.
🌊 WATER PARAMS
ParamStatusIdeal
TemperatureOK (78.4)72–80 °F
SalinityOK (1.025)1.023–1.027 sg
pHOK (8.22)8.1–8.4
Nitrate NO₃⁻OK (8.0)0–20 ppm
Tank Compatibility
Ocellaris ClownfishCompatible
Royal GrammaCompatible
Tailspot BlennyCompatible
Firefish GobyCompatible
Yellow TangCompatible
Six Line WrasseCompatible
Orchid DottybackCompatible
Torch CoralCompatible
Hammer CoralCompatible
Acropora SPSCompatible
Duncan CoralCompatible
Skunk Cleaner ShrimpCompatible
Turbo SnailCompatible
Blue Leg Hermit CrabCompatible