Green Brittle Star (Ophiarachna incrassata)
Green Brittle Star (Ophiarachna incrassata)
Same fast, lever-like arm locomotion as its black-bodied cousin, just running a vivid green instead — and just as quick to disappear into rockwork the second the lights come on. Larger green brittle stars have a well-earned reputation as opportunistic hunters at night, so while it’s a fine addition to most reef tanks, very small fish sleeping out in the open aren’t entirely off the menu.
Care level: Easy · Temperament: Peaceful (opportunistic at night) · Max size: ~10" arm span · Min tank: 20 gal · Reef safe: Yes (caution with very small fish) · Diet: Scavenger, detritus/meaty foods
At a glance
- Scientific name
- Ophiarachna incrassata
- Common name
- Green Brittle Star
- Water type
- Saltwater
- Care level
- Easy
- Temperament
- Peaceful (opportunistic at night)
- Max size
- ~10" arm span
- Minimum tank
- 20 gal
- Diet
- Scavenger, detritus/meaty foods
- Reef safe
- Yes (caution with very small fish)
When it ships
Most non-quarantined stock goes out the week you order. If we do not already have the animal in-house we source it first — allow up to two weeks for it to reach us. Live animals leave Monday and Tuesday, and Early AM Overnight is the only service that carries a live arrival guarantee.
The live guarantee
Shipped Early AM Overnight: a 1-hour DOA window from confirmed delivery, and nothing beyond it. Next Day Air and 2-Day carry no live arrival guarantee, and neither does USPS Priority. Local pickup or local delivery: 24 hours, if you bring a water sample from your aquarium and we test it before the animal goes home. Maintenance clients: 60 days when we service the aquarium at least twice a month, 28 days on a monthly plan.
Expert guidance
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Cameron draws on 25+ years in the hobby and a marine biology background to help you choose the right fit for your system.