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, look up species-specific basics in the Encyclopedia. If you notice health issues, try the Find by symptom.