Aquatic · Discus Fish
Discus Care Guide: Advanced Pristine Water Requirements
Expert-level care for these delicate South American cichlids requires precise water conditions, specialized feeding, and gentle handling.
Discus are native to the warm, slow-moving waters of the Amazon River basin in Brazil. They thrive in temperatures between 82°F and 86°F (28°C - 30°C) with a subtle temperature gradient of no more than 1-2 degrees Fahrenheit throughout their environment. Water hardness should range from 5-15 dGH, pH levels between 6.0-7.0, and a gentle water flow that doesn't disrupt the natural driftwood and plant cover.
A minimum tank size of 55 gallons is recommended for a single adult discus due to their territorial nature and requirement for extensive swimming space. The aquarium should be heavily planted with live Amazonian species like Anubias, Cryptocoryne, and Java Ferns to provide hiding places and maintain water quality through natural filtration.
The substrate must be fine-grained and free of sharp edges — sand or a 1-2mm deep layer of peat-based mix is ideal. Avoid gravel or rough surfaces that can cause injury to these sensitive fish. Decorations should include plenty of driftwood, rocks, and plants arranged in naturalistic clusters rather than linear structures.
Discus are carnivorous and require a diet rich in protein from high-quality commercial pellets specifically formulated for their nutritional needs. Supplement with frozen meaty foods like brine shrimp, bloodworms, and earthworms 2-3 times per week. Avoid live or fresh foods that can introduce bacteria into the system.
Feeding should be done carefully to prevent overfeeding — only provide enough food to be consumed within 1-2 minutes. Discus have a slow metabolism and will store excess nutrients as fat if not properly managed. Treats like daphnia, mysis shrimp, or small pieces of beef heart can also be used occasionally.
Handling discus requires extreme care due to their extremely sensitive nature. They should never be removed from water for extended periods and must always be supported by the belly when handling. Even gentle touch can cause stress that leads to disease — it's generally recommended to avoid handling them altogether except in emergency situations.
Common health issues include Ich, Velvet, and bacterial infections like fin rot or mouth fungus. Regular 10-15% water changes with a precise temperature match is crucial for maintaining healthy water chemistry. Quarantine procedures should always be followed when introducing new fish to prevent disease transmission.