Oscar
From Microcosm Aquarium Explorer
A personable cichlid for larger aquariums and rugged tankmates. JJPhoto.dk
Overview
This “personality fish” is one of the best-known cichlids. It may live for 10-plus years, and will interact more and more with its owner over time. Several color and finnage variations available.
Family: Cichlidae
Other common name(s):
Native range:
- Northern Paraguay
- Peru
- Colombia
- Brazil
- French Guiana
Habitat: Oscars are prone to “rearranging” their tanks, so care should be taken when setting up the decor. Provide several rock piles (preferably anchored in place to avoid toppling, and not near the glass) throughout the tank in which they can hide. Any plants should be potted and buried in the substrate, floating or anchored to driftwood (Java fern, Java moss). Deep gravel substrate is preferred.
Maximum length: 36 cm (14 in)
Minimum aquarium size: 209 L (55 gal)
Water: Freshwater 22 °C (72 °F) - 26 °C (79 °F)
General swimming level: Throughout the aquarium.
Feeding
Long thought to be the “food of choice” for A. ocellatus, live feeder fish are not necessary to keep your Oscar healthy and alert. Does best on a variety of foods specifically designed for omnivorous cichlids. Supplement with freeze-dried krill for adults, bloodworms for juveniles.
Aquarium Compatibility
Oscars are generally peaceful, despite their size. Acquire four or more young individuals in as large a tank as possible.
Breeding/Propagation
Oscars form cohesive pairs and spawn in the open, often in pits dug in the gravel. Albinos and various other color forms are commonly available.
Notes
Heavy filtration and frequent partial water changes are a must, as these are messy eaters. Lax attention to water quality may lead to “Hole-in-the-Head” disease.