Freshwater Fish
Assorted Koi.
Young koi in assorted colors — pond fish that grow large and live for decades. Hardy and beginner-friendly, but plan ahead: these belong in a pond or a very large tank as they grow. Great starter stock for a backyard water garden.
In-store purchase only. Live fish, coral, and invertebrates are sold at our Erie store only. They cannot be bought online, and we do not ship live animals under any circumstances.
Live fish are priced per supplier batch — prices may vary. Call to confirm current pricing.
- Condition
- new
- Fulfillment
- Local pickup — Erie, PA
Live animals are sold in store only — we do not ship fish, coral, or invertebrates. Every animal is acclimated and health-checked in-house before it reaches the sales floor. This is a species we carry — it's most likely in the tanks around delivery days, but live stock changes daily. Please call (814) 456-9445 to confirm availability before you drive in.
Care at a glance
What to know before you take one home.
- Care level
- Beginner
- Temperament
- Peaceful
- Adult size
- 36"
- Min tank size
- 250–1000 gal by age
- Diet
- Omnivore
- Scientific name
- Cyprinus rubrofuscus
Grows into its tank
Juvenile (under 12 in)250 galAdult (full grown)1000 galGood tank mates
These are young pond fish that grow large and live for decades, so tank pairing isn't really the question here. Compatibility depends on the individual and your setup, so call us for pairing advice before mixing them with anything. As a rule, do not house koi with small fish they can eventually eat.
Good to know
Koi are a colored ornamental form of the Amur carp, bred for color in Japan starting in the 1820s, and can live for several decades.
Stock and individual temperament vary — call (814) 456-9445 for pairing advice before you buy.
Good tankmates
Plays well with.
Species we’d keep in the same tank, with why each pairing works. Stock and individual temperament vary — call (814) 456-9445 to confirm before you buy.
New to stocking a tank? Read our guide on which fish live together.
Oranda Goldfish
Classic, well-documented koi companion sharing the same cold-water freshwater range, similar adult size, and peaceful temperament. Both species thrive under identical water parameters and neither exhibits aggression or fin-nipping toward the other.
Oranda Goldfish
Calico single-tail goldfish variety with identical cold-water requirements and a peaceful disposition. Widely documented as compatible with koi in both aquarium and pond settings with no aggression or parameter conflicts.
Oranda Goldfish
Red-and-white single-tail goldfish that is virtually identical in care requirements to Comet Goldfish and Shubunkin. Published care guides explicitly recommend this variety as a koi companion; shares cold-water parameters and a non-aggressive temperament.
- W
Weather Loach
Peaceful cold-water bottom dweller tolerating 50–82 °F, fully overlapping with koi's preferred range. Occupies the substrate level exclusively, eliminating resource competition with mid-water koi, and is not known to nip fins.
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.