O Diário
Fishkeeping stories, new arrivals and seasonal tips from our keepers.
Price Guides
Goldfish Price Guide: From Feeder Fish to Championship Ranchu
· 6 min read
Beginner Guides
Best Pufferfish for Beginners: Quirky Personalities, Manageable Care
· 6 min read
Beginner Guides
Common Fish Diseases: Symptoms, Causes & Treatment Guide
· 9 min read
Beginner Guides
Best Tank Mates for Exotic Fish: Compatibility Guide
· 8 min read
Buying Guides
Best Aquarium Equipment Guide: Everything You Need for a Thriving Tank
· 9 min read
Comparisons
Oscar vs Flowerhorn: Which Cichlid Is Right for You?
· 8 min read
Comparisons
Discus vs Angelfish: Which Elegant Cichlid Is Right for You?
· 7 min read
Comparisons
Freshwater vs Saltwater Aquarium: The Complete Comparison
· 8 min read
Comparisons
Arowana vs Flowerhorn: The Ultimate Exotic Fish Showdown
· 9 min read
Comparisons
Betta vs Gourami: Which Labyrinth Fish Is Right for You?
· 11 min read
Comparisons
Freshwater vs Saltwater Stingray: Care, Size, Cost & Legality Compared
· 7 min read
Price Guides
Axolotl Price Guide: Morphs, Costs & What to Budget in 2026
· 6 min read
Beginner Guides
Best Goldfish Varieties for Beginners: Hardy and Beautiful
· 6 min read
Comparisons
Arowana vs Snakehead: Size, Aggression, Legality & Predator Fish Compared
· 7 min read
Comparisons
Betta vs Paradise Fish: Aggression, Hardiness, Tank Needs & History Compared
· 7 min read
Price Guides
Gem Tang Price Guide: Why This Saltwater Fish Commands $800–$3,000
· 5 min read
Price Guides
Betta Fish Price Guide: From Pet Store to Show-Quality
· 6 min read
Beginner Guides
Best Koi Varieties for Beginners: Pond Fish That Thrive
· 6 min read
Comparisons
Discus vs Flowerhorn: Care Difficulty, Temperament & Tank Setup Compared
· 6 min read
Comparisons
Pleco vs Corydoras: Algae Control, Size, Tank Needs & Community Role Compared
· 6 min read
Price Guides
Flowerhorn Cichlid Price Guide: Kok Size, Colour & Competition Grading
· 5 min read
Beginner Guides
Best Betta Varieties for Beginners: Beautiful and Easy to Keep
· 6 min read
Comparisons
Flowerhorn vs Blood Parrot: Aggression, Appearance, Care & Value Compared
· 6 min read
Comparisons
Axolotl vs Mudpuppy: Species, Care, Legality & Key Differences Compared
· 6 min read
Price Guides
Koi Fish Price Guide: From Pond-Grade to Grand Champion
· 5 min read
Beginner Guides
Best Catfish for Beginners: Low-Maintenance Bottom Dwellers
· 5 min read
Beginner Guides
Best Plecos for Beginners: Algae-Eating Powerhouses That Stay Small
· 6 min read
Species Spotlights
Types of Catfish: The Complete Aquarium Guide
· 12 min read
Species Spotlights
Types of Cichlids: The Complete Aquarium Guide
· 13 min read
Comparisons
Koi vs Goldfish: Size, Lifespan, Cost & Pond Suitability Compared
· 6 min read
Comparisons
Oscar vs Jack Dempsey: Aggression, Size, Tank Needs & Personality Compared
· 6 min read
Price Guides
Discus Fish Price Guide: What to Expect to Pay in 2026
· 5 min read
Price Guides
Freshwater Stingray Price Guide: Costs, Species & What to Budget
· 4 min read
Beginner Guides
Best Cichlids for Beginners: Hardy, Colourful, and Easy to Keep
· 6 min read
Beginner Guides
Discus Fish: The Complete Beginner's Guide
· 7 min read
Species Spotlights
Wolf Fish: Everything You Need to Know
· 6 min read
Buying Guides
Buying Exotic Fish Online: The Complete Guide
· 6 min read
Species Spotlights
20 Best Large Freshwater Fish for Aquariums
· 9 min read
Species Spotlights
Flowerhorn Cichlid: The Complete Guide
· 8 min read
Species Spotlights
Fahaka Pufferfish: Care, Tank Setup & Feeding
· 6 min read
Species Spotlights
G.E.M. Tang: The Ultimate Rare Marine Fish Guide
· 6 min read
Species Spotlights
The Most Expensive Aquarium Fish in the World
· 6 min read
Species Spotlights
15 Rarest Fish in the Aquarium Hobby (2026)
· 6 min read
Price Guides
Platinum Arowana Price Guide
· 5 min read
Species Spotlights
Top 10 Most Colorful Freshwater Fish for Your Aquarium
· 8 min read
Buying Guides
Rare Fish That Are Legal to Own in the US
· 6 min read
Species Spotlights
Freshwater Stingray Care: Everything You Need to Know
· 7 min read
Price Guides
How Much Does an Arowana Cost? Pricing Guide by Species
· 6 min read
Beginner Guides
Best Exotic Fish for Beginners: 10 Species Under $100
· 8 min read
Species Spotlights
Arowana Care Guide
· 8 min read
Beginner Guides
Exotic Fish Tank Setup
· 7 min read
Species Spotlights
Most Expensive Fish in the World
· 7 min read