🐠 Aquarium Fish & Invertebrates
Aquascaping, Water Chemistry & Community Tanks
A complete guide to successful freshwater and marine aquariums: Betta fish, Tetra schooling communities, Cichlids, Livebearers, and Caridina dwarf shrimp. Master the biological nitrogen cycle and water parameters.
⭐ Popular Breeds & Companions
Betta Fish (Siamese Fighting Fish)
Labyrinth Organ, Solitary & Vivid Finnage
Neon Tetra
Peaceful, Schooling & Bioluminescent Hue
Fancy Guppy
Prolific Livebearer, Colorful & Hardy
Angelfish
Majestic Cichlid, Triangular Silhouette
Cherry Shrimp (Neocaridina)
Algae Cleanup Crew, Nano-Tank Friendly
📋 Science-Backed Care & Husbandry Essentials
The Nitrogen Cycle (Fishless Cycling)
Before adding fish, establish beneficial nitrifying bacteria (Nitrosomonas and Nitrospira) to convert toxic ammonia into nitrite, and then into harmless nitrates.
Water Parameters & Testing
Monitor temperature, pH, ammonia (0 ppm), nitrite (0 ppm), and nitrate (<20 ppm) weekly using liquid reagent master test kits.
Filtration & Scheduled Water Changes
Combine mechanical, chemical, and biological filtration. Perform 20–25% partial water changes weekly with dechlorinated tap water.
❓ Frequently Asked Questions
Can a Betta fish live in an unfiltered bowl?
No. Betta fish require a heated (25–27°C / 78–80°F), filtered aquarium of at least 5 gallons (19 liters) to avoid ammonia toxicity, fin rot, and temperature shock.
How often should aquarium water be changed?
Perform a 20% to 25% water change weekly or bi-weekly depending on bioload, using a gravel siphon to remove detritus from the substrate.