Freshwater Fish
Assorted Mollies.
Mollies are hardy, adaptable livebearers that work in both freshwater and brackish tanks — easygoing community fish that top out around 4.5 inches and do well in a 20-gallon-plus setup. We rotate Black, Dalmatian Lyretail, Silver Lyretail, and Balloon morphs; the pictured fish is one colorway, and the mix changes by batch.
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.
- Temperament
- Peaceful
- Adult size
- 4.5"
- Min tank size
- 20 gallons
- Diet
- Omnivore
- Scientific name
- Poecilia spp.
What is in the tanks and each animal's temperament vary — call (814) 456-9445 for pairing advice.
Assortment
What you might find in the tank.
This is a rotating assortment — the exact species in the tank vary by shipment. The list below is what we usually carry; call (814) 456-9445 to confirm what's in today.
- photo coming
Black Molly
Usually carried
Dalmatian Lyretail Molly
Usually carried
Silver Lyretail Molly
Usually carried
Balloon Molly
Usually carried
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.
Assorted Guppy
Fellow livebearer in the same genus with virtually identical water requirements — hard, alkaline water at pH 7.5–8.5 and the same temperature range. Both species are small and peaceful, making this one of the most widely recommended and well-documented molly companions.
Assorted Platy
Peaceful livebearer that thrives in the same hard, alkaline freshwater conditions mollies require. Similar size and temperament eliminate competition or harassment, and the water parameter overlap is complete — no compromise needed for either species.
Bronze Cory
Bottom-dwelling peaceful scavengers that occupy a different tank level than mollies, eliminating direct competition. Captive-bred corydoras tolerate pH 7.5–8.0 and 74–80°F — a real overlap with molly parameters — and Aquarium Co-op specifically lists them as compatible molly tankmates.
- S
Swordtail
Livebearer sharing the same genus as the platy with identical water parameter needs and a similarly peaceful disposition toward other community fish. The comparable size prevents any predator-prey dynamic, and male–male swordtail aggression stays within the species rather than directed at mollies.
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.