Grace in every movement
Angelfish
A graceful centerpiece with unmistakable fins. Give them height, calm companions, and room to grow.
Soft to neutralIntermediateMid-water
Check tankmates 
Altum Angelfish
Congressional Aquarium · Freshwater
Freshwater Fish
Bring your aquarium to life.
Community tanks, planted aquascapes, cichlid setups, and nano aquariums.
Explore the freshwater room01 / The centerpieces
A presence all their own.
From graceful angelfish to jewel-like dwarf cichlids, a freshwater aquarium starts with a fish that captures your imagination.
Living color
Discus
Rich color and a striking silhouette. Consistent warm water and careful maintenance come first.
Soft, acidicSpecialistMid-water
Check tankmates 
Small fish. Remarkable presence.
German blue rams
Jewel-like dwarf cichlids for mature aquariums with warm, stable water and sheltered territory.
Soft, acidicIntermediateLower water
Check tankmates Species shown for inspiration; availability varies. Water needs depend on the exact species and your aquarium.
02 / Life in motion
Better together.
Schooling fish bring rhythm, color, and movement to the freshwater aquarium.
03 / The freshwater collection
Find your kind of fish.
Bottom foragers, colorful livebearers, bold cichlids, and familiar favorites.
Tank planning
Species compatibility
Pick a fish family to see who shares its water temperature, temperament, and space needs. These are general guides—tank size and the exact species always have the final say, so ask us before you stock.
Livebearers · 72–80°F
Compatible6
With care10
Not recommended5
Bringing fish home to an existing tank? Tell us what you already keep and we will check the whole mix with you.
Ask before you buy.
We'll check compatibility with your current tank and talk through tank size, filtration, and stocking pace.
Explore other departments
Jump straight into another part of the store.
Saltwater Fish
Reef-safe selections and marine setups.
Invertebrates
Shrimp, snails, crabs — fresh and salt.
Koi & Pond Supplies
Outdoor color, food, and pond care.
Rare Specimens
Unusual finds worth the trip.
Aquarium Plants
Epiphytes, stems, carpets, and tissue culture.
Bettas & Nano Aquatics
Show bettas, nano aquascapes, gentle filtration, and specialized nutrition.
138 Congressional Lane, Rockville, MD 20852 · Lower level of Congressional Plaza ·