Can Oscar live with Siamese Algae Eater?
Not recommended
Why
- Oscar’s mouth is big enough to swallow Siamese Algae Eater (only 6" long) — it will be eaten.
- Oscar is aggressive and will attack the peaceful Siamese Algae Eater.
- Only a narrow water hardness overlap — keep both around 6–7.5 dGH.
Side-by-side
| Oscar | Siamese Algae Eater | |
|---|---|---|
| Temperature | 74–81°F | 72–79°F |
| pH | 6–8 | 6.5–7.6 |
| Hardness (GH) | 5–20 dGH | 6–7.5 dGH |
| Adult size | 16" | 6" |
| Temperament | Aggressive | Peaceful |
| Min tank | 75 gal | 30 gal |
Together, plan on at least 75 gallons.
Compatible alternatives
Instead of Oscar (to keep Siamese Algae Eater):
- Kissing Gourami — 12", semi-aggressive
- Giant Gourami — 24", semi-aggressive
- Moonlight Gourami — 6", peaceful
Instead of Siamese Algae Eater (to keep Oscar):
- Oscar — 16", aggressive
- Kissing Gourami — 12", semi-aggressive
- Giant Gourami — 24", semi-aggressive
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Design a tank with Oscar, Siamese Algae Eater →Everything compatible with Oscar · …with Siamese Algae Eater