Saltwater Fish
Green Chromis.
A shimmering blue-green schooling fish — peaceful, reef-safe, and one of the best beginner saltwater fish for adding movement. Keep a group in a 30-gallon-plus reef; they shoal beautifully over the rockwork and get along with most everything.
We keep this species at our Erie store. Come and see it in the tanks, or call (814) 456-9445 and ask what we have in right now.
Sea Cave keeps this species. You will find these in the tanks at 660 East 14th Street in Erie. We never ship live animals.
- Condition
- new
- Fulfillment
- Local pickup — Erie, PA
We never ship fish, coral, or invertebrates — every animal here is one you meet in person. Each one is acclimated and health-checked in-house before it goes out into the display tanks. This is a species we keep, and what is swimming on any given day changes with the deliveries, so please call (814) 456-9445 before you drive in.
Care at a glance
What to know before you take one home.
- Care level
- Beginner
- Temperament
- Peaceful
- Community
- Community safe
- Adult size
- 3.5"
- Min tank size
- 30 gallons
- Diet
- Omnivore
- Scientific name
- Chromis viridis
Good tank mates
A truly peaceful schooling damsel that mixes well with most reef community fish like clownfish, gobies, firefish, and other calm species. They look and behave best kept in an odd-numbered group, since lone or paired chromis can turn nippy with each other; over time a group may thin itself out as a pecking order forms. Avoid keeping them with large aggressive fish, and don't expect the docile temperament of their more bullying damselfish cousins.
Good to know
In a group, green chromis shimmer between green and pale blue depending on the light, and on the reef thousands hover together over branching corals, darting into the branches as one when threatened.
What is in the tanks and each animal's temperament vary — call (814) 456-9445 for pairing advice.
Good tankmates
Plays well with.
Species we’d keep in the same tank, with why each pairing works. What is in the tanks and each animal’s temperament vary — call (814) 456-9445 for advice on pairing.
New to stocking a tank? Read our guide on which fish live together.
Ultra Black Ice
Chromis viridis is among the most peaceful damselfishes and is explicitly called out as safe with Ocellaris Clownfish in 40+ gallon tanks by multiple reef authorities. Both are small, non-predatory, and occupy different niches (open water schooling vs. anemone hosting). Concerns about damselfish-clownfish aggression apply to more belligerent damsels, not Chromis viridis.
Royal Gramma
Multiple independent sources explicitly name Blue-Green Chromis as a compatible tankmate for Royal Gramma. The Gramma stays hidden in rockwork crevices while Chromis schools in open water — no territorial or niche overlap, and temperaments match.
Yellow Watchman Goby
A peaceful, reef-safe bottom-dweller that spends its time in substrate burrows — a completely different ecological niche from mid-water-column Chromis schooling. No competitive pressure, no aggression record between these species, and identical saltwater parameter requirements.
Firefish Goby
Both are small, peaceful, reef-safe fish with no predatory overlap. Firefish hover near rock structures in the lower water column while Chromis school mid-water — distinct niches eliminate territorial conflict. Compatibility lists from multiple reef sources confirm this pairing.
- B
Bicolor Blenny
Confirmed compatible with Chromis viridis across multiple sources. The Bicolor Blenny perches on rockwork and does not compete for the open-water space Chromis occupies. Known territorial behavior in this blenny is directed at other blennies and similar-shaped fish, not at schooling damsels.
Visit the store
660 East 14th Street,
Erie, PA.
Mon–Fri 12–6 · Sat 11–4 · Sun closed. Call ahead on livestock — what's on the floor rotates.