Can goldfish live with bristlenose plecos?
No, they don't mix. Goldfish need cool water and grow big and messy. Keep them with other goldfish, not tropical fish.

No
Verdict
72–72°F
Shared temperature
30 gal
Smallest tank
The two fish side by side
| Fish | Adult size | Temperature | Min. tank | Keep | Watch for |
|---|---|---|---|---|---|
| Fancy goldfish | 7 in | 65–72°F | 30 gal | Alone or as a pair | eats small fish, cool water |
| Bristlenose pleco | 5 in | 72–80°F | 20 gal | Alone or as a pair | peaceful |
If they are already together
- Separate them as soon as you can. A tank divider works for a few days while you set up a second tank or find a new home.
- Watch for torn fins, hiding and missing fish. Treat any damaged fins with clean water. See fin rot.
- Pick a new tankmate from the lists below.
Good tankmates instead
- For goldfish: Common goldfish, Mystery snail
- For bristlenose plecos: Angelfish, Corydoras (bronze or peppered), Amano shrimp, Black skirt tetra, Cardinal tetra, Cherry barb
Want to check a whole tank? Pick up to 8 fish in the fish compatibility checker, which opens with this pair already filled in.
Planning a whole tank? Your First Aquarium includes ready-made stocking plans and care cards for 15 beginner fish. Get the guide for $12
More tankmate questions: Can bettas live with bristlenose plecos? · Can bettas live with goldfish? · Can angelfish live with bristlenose plecos? · Can goldfish live with neon tetras? · All tankmate guides
Related: Fancy goldfish care · Bristlenose pleco care · Fish compatibility checker · Fish care sheets