Goldfish vs Swordtail
Side-by-side care comparison to help you choose.
| Goldfish | Swordtail | |
|---|---|---|
| Difficulty | Intermediate | Beginner |
| Adult size | 6-12 inches (depending on type) | 4-5 inches |
| Lifespan | 10-15 years | 3-5 years |
| Min tank size | 20-40 gallons | 20 gallons |
| Water temp | 65-75 F | 72-82°F |
| pH | 6.5-7.5 | 7.0-8.0 |
| Temperament | Peaceful | peaceful |
| Tank mates | Other goldfish; avoid fin nippers and small fish that fit in mouth. | Peaceful community fish like mollies, platies, tetras, corydoras. |
| Diet | High-quality sinking pellets or gel food, supplemented with blanched vegetables (peas, zucchini) and occasional bloodworms. Feed 2-3 times daily in small amounts. | Omnivore; feed high-quality flake or pellet daily, supplement with frozen or live foods like brine shrimp and daphnia 2-3 times per week. |