Tiger Oscar Long Fin
The Tiger Oscar Long Fin is a striking freshwater fish known for its vibrant orange and black coloration and long, flowing fins. This species is popular among aquarium enthusiasts for its active behavior and unique appearance.
Key Features
- Color: Bright orange with black markings
- Fin Type: Long, flowing dorsal and caudal fins
- Size: Up to 12 inches when mature
- Temperament: Aggressive toward smaller fish, peaceful with larger tank mates
- Water Temperature: 75–82°F (24–28°C)
- Water pH: 6.0–7.5
- Water Hardness: 3–8 dGH
Specifications
| Parameter | Value |
|---|---|
| Species | Tiger Oscar (Astronotus ocellatus) |
| Length (adult) | 10–12 inches |
| Fin Type | Long fin variant |
| Temperature Range | 75–82°F |
| pH Range | 6.0–7.5 |
| Hardness | 3–8 dGH |
FAQ
What is the ideal tank size for a Tiger Oscar Long Fin?
A minimum tank size of 100 gallons is recommended to provide enough space for this active and territorial fish.
Are Tiger Oscar Long Fins compatible with other fish species?
They are best kept with larger, aggressive fish or very large, non-susceptible species. Avoid keeping with small or slow-moving fish due to their predatory nature.
How long does it take for a Tiger Oscar Long Fin to reach full size?
It typically takes 2 to 3 years to reach full adult size, depending on diet and tank conditions.

Tracey Newman –
The Tiger Oscar Long Fin is a stunning addition to my 100-gallon tank. It’s very active and shows off its long fins beautifully. I had to be careful with smaller fish, but it’s a great centerpiece for a larger aquarium.
Jonathan Burgess –
This fish is vibrant and energetic. I’ve kept it for over a year and it’s still growing. The fins are impressive and it’s very noticeable in the tank. Just make sure to provide plenty of hiding spots.
Gavin Lee –
The fish arrived healthy and looks great. It’s active but can be aggressive. I’ve added a few large corydoras and it’s not causing issues yet. Needs a big tank and stable water conditions.