Answer:

tetras

Answer	Crossword Clue
TETRAS	Aquarium favorites
TETRAS	Colorful fish
TETRAS	Aquarium fish

TETRAS	Colorful swimmers
TETRAS	Colorful pet store purchases
TETRAS	Aquarium denizens
TETRAS	Bright swimmers
TETRAS	Popular tank fillers
TETRAS	Pet store swimmers
TETRAS	Aquarium fishes
TETRAS	Aquarium acquisitions

TETRAS	Showy aquarium fishes
TETRAS	Colorful aquarium fish
TETRAS	Brilliant swimmers
TETRAS	Small aquarium fish
TETRAS	Bright aquarium fish
TETRAS	Tank residents
TETRAS	Tropical fish
TETRAS	Brilliant fish

TETRAS	Colorful freshwater fish
TETRAS	Pet shop fish
TETRAS	Aquarium swimmers
TETRAS	Bright fish
TETRAS	Common aquarium fishes
TETRAS	Aquarium store offerings
TETRAS	Fish store stock
TETRAS	Colorful fishes

TETRAS	Colorful additions to tanks
TETRAS	'Neon' fish
TETRAS	Fishtank favorites
TETRAS	'Neon' tank swimmers
TETRAS	'Neon' tank fish
TETRAS	Showy fish
TETRAS	Tank stock, perhaps
TETRAS	"Neon" fish

TETRAS	Some aquarium acquisitions
TETRAS	Fish bowl swimmers
TETRAS	Aquarium residents
TETRAS	Tank stock
TETRAS	Popular tank swimmers