Freshwater Fish
GloFish Shark.
The GloFish shark is Epalzeorhynchos bicolor — the red-tailed shark — bred to express vivid fluorescent color, and it grows to about 5 inches with the same territorial attitude as the original. Keep exactly one per tank in a 55-gallon-plus setup with semi-aggressive, fast-moving tankmates and plenty of caves to claim.
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
- Intermediate
- Temperament
- Semi aggressive
- Community
- Semi community
- Adult size
- 5"
- Min tank size
- 55 gallons
- Diet
- Omnivore
- Scientific name
- Epalzeorhynchos bicolor (fluorescent transgenic variant)
Good tank mates
This is a fluorescent red-tailed shark, and it's semi-aggressive and territorial, so it needs similarly-sized, not-timid tankmates, not a peaceful nano community. Keep just one per tank, since they'll fight their own kind and other sharks. Good company is active, sturdy mid-sized fish that can hold their own, like larger barbs, bigger danios, or rainbowfish, with plenty of hiding spots and broken-up sightlines to ease tension. Avoid slow or long-finned fish it can harass, and don't add a second shark of any kind. For a specific pairing you're unsure about, give us a call.
Good to know
GloFish Shark is the same species as the red-tailed shark, Epalzeorhynchos bicolor, bred to express a fluorescent color from an added gene.
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.
Zebra Danio
Quick upper-level schooler confirmed safe with red tail sharks: fast enough to evade any chase attempt and occupies the top of the water column away from the shark's claimed bottom territory.
- G
Giant Danio
Fast, robust upper-to-mid level schooling cyprinid that stays well above the shark's bottom territory. Multiple authoritative sources explicitly list them as compatible with red tail sharks, and their speed and size make harassment unlikely.
- B
Boesemani Rainbowfish
Active mid-to-upper level swimmer rated 9/10 ease as a companion for Epalzeorhynchos species. Temperature ranges overlap sufficiently (72–77°F Boesemani, 72–79°F RTS). Keep in a school of 8+ and introduce before the shark establishes territory.
- R
Rosy Barb
Explicitly listed as a top companion for red tail sharks across multiple care guides. Robust, mid-level, and fast enough to evade the shark. Keep in a school of 5+ to redirect any intra-species fin-nipping behavior within the group.
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.