Tropical Fish Buying Guide
Tropical fish are colorful and highly ornamental, making them popular for first-time aquariums. This guide covers what you need to know before purchasing tropical fish.
💰Price Range
Neon Tetra $1-$3, Guppy $3-$10, Betta $5-$50
View detailed price data →Recommended for Beginners
Buying Tips
Cycle your tank
Grow filter bacteria before adding fish.
A heater is essential
Tropical fish need 24-28°C (75-82°F). A heater is a must in winter.
Add fish gradually
Adding too many at once causes water quality crashes. Add slowly.
Watch feeding amounts
Feed only what they eat in 2-3 minutes, 1-2 times daily. Leftover food degrades water quality.
Useful Tools
💧 Aquarium Volume Calculator
Calculate water volume, weight, and heater wattage from tank dimensions
🧪 Water Quality Checker
Find compatible fish, shrimp, plants & corals based on pH, temperature & hardness
🍽️ Feeding Guide
Check feeding frequency, portion sizes & supplements by species and growth stage
🤝 Compatibility Checker
Check compatibility between two species on a 5-level scale
📊 Fish Compatibility Matrix
Check fish compatibility at a glance with our matrix chart
🔄 Nitrogen Cycle Guide
Auto-calculate bacteria colonization timeline for new tank cycling
🗓️ Seasonal Care Calendar
Monthly care events and seasonal management tips at a glance
🚿 Water Change Calculator
Auto-calculate optimal water change frequency and volume by tank size and fish count
🐠 Stocking Calculator
Calculate max fish capacity for your tank size with overstocking alerts
⚡ Electricity Cost Simulator
Calculate monthly and annual electricity costs for care equipment with presets
🧬 Breeding Planner
Select parent varieties to view breeding schedules and offspring patterns
🏞️ Tank Layout Planner
Get substrate, plant & hardscape suggestions based on tank size and style
🧮 Care Cost Simulator
Estimate initial, monthly & annual costs by category, care level and quantity
⚖️ Species Comparison Tool
Compare two species side by side: care difficulty, size, lifespan & temperature
🎯 Pet Match Diagnostic
Answer 7 questions to find your top 3 perfect pets
📋 Lifetime Cost Simulator
Estimate lifespan and lifetime costs by species for dogs, cats, reptiles and more
🚚 Transport Safety Checker
Check transport safety score and precautions by category, season, method and distance
💊 Medication Dosage Calculator
Calculate proper medication dosage by body weight and medicine type for fish, reptiles, and small animals
⏱️ Quarantine & Acclimation Timer
Manage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species
Related Content
If you have questions about care, you can ask experienced keepers and breeders on the Care Q&A Board. If you notice health issues, try the Find by symptom.