Oscar Fish (Astronotus ocellatus) Size and Appearance Traits
1. Basic Size Data
- Adult Length: Typically 10–14 inches (25–35 cm), with some reaching up to 16 inches (40 cm) in captivity.
- Weight: Adults usually weigh 2–3.3 lbs (1–1.5 kg), though this can vary based on care.
2. Physical Features
- Body Structure: Oval-shaped and laterally compressed, with a broad head. Dorsal and anal fins extend to the caudal peduncle, and the tail fin is fan-shaped.
- Color Variations: Wild types have a gray-black base with golden patches, while selectively bred varieties come in solid red, yellow-white, and other color schemes.
3. Size Comparisons
- Among cichlids, Oscars are large—significantly bigger than common aquarium fish like guppies or tetras.
- They’re considered medium-sized compared to other South American freshwater giants like arowanas.
Note: Overfeeding can lead to obesity. Control diet to maintain a healthy body shape.