1. Tank Size: A minimum tank size of 10 gallons is recommended for a single Scarlet Badis, with additional space needed if keeping more than one.2. Water Conditions: Maintain a temperature between 75°F and 80°F (24°C - 27°C) and a pH level between 6.0 and 7.0, which replicates their natural habitat. Use a reliable aquarium water heater and test kit to monitor and maintain water parameters.3. Filtration: A gentle filtration system is recommended, as Scarlet Badis prefer slow-moving water. A sponge filter or a low-flow hang-on-back filter can be suitable.4. Tank Setup: Provide plenty of hiding spots using plants, driftwood, and rocks. These fish thrive in densely planted tanks with floating plants to diffuse light and create shaded areas.5. Diet: Scarlet Badis are primarily carnivorous. They will readily accept live or frozen foods like brine shrimp, daphnia, bloodworms, and small insects. It's important to offer a varied diet to ensure proper nutrition.6. Tankmates: Scarlet Badis can be territorial, especially males towards each other. Peaceful tankmates such as small shoaling fish like rasboras or danios, or similarly-sized dwarf shrimp, can be compatible. Avoid fin-nipping or aggressive fish species.7. Behavior: Scarlet Badis are generally peaceful but can sometimes be shy. Providing ample cover and a stress-free environment will help them display their natural behaviors.8. Water Changes: Regular water changes of around 20% every week are crucial to maintain good water quality. This is particularly important for Scarlet Badis due to their sensitivity to changes in water parameters.9. Breeding: Breeding Scarlet Badis can be challenging, but it can be encouraged by providing plenty of plants and hiding spots. Males will construct bubble nests and look after the eggs. It's recommended to provide live foods to enhance breeding success.Remember, these care guidelines are general and should be adjusted based on the specific needs of your Scarlet Badis. Regular observation and monitoring of their behavior and water conditions will help ensure their health and well-being.