
Betta's kunnen met zorgvuldig gekozen aquariumgenoten samenleven in een ruim, dichtbeplant aquarium. Ontdek welke soorten geschikt zijn, welke je beter vermijdt en hoe je ze veilig introduceert.
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67 guides covering every aspect of welke vissen kunnen bij een betta? complete gids voor geschikte aquariumgenoten care — organized so you can find exactly what you need.
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The full care guide — habitat, diet, water parameters, health, acclimation, and buying tips all in one place.
Learn how to build the perfect aquarium — tank size, substrate, filtration, and environment basics.
5 Gallon Betta Fish Tank: Planted Setup, Gear, and Care
Build a thriving 5 gallon betta fish tank with live plants, gentle filtration, balanced light, and simple care. Follow this planted setup guide today.
Aquarium Beneficial Bacteria: What They Do and How to Keep Them Alive
Discover how aquarium beneficial bacteria work, how to grow a healthy colony faster, and which bottled bacteria products are actually worth it in 2026.
Aquarium Cycling Without Fish: How to Do It Right in 4–8 Weeks
Cycle your aquarium without fish safely in 4–8 weeks. This fishless cycling guide covers ammonia dosing, test schedules, and the best starter products.
Aquarium Fish Tank with Fish: Best Species for Planted Tanks
Build a thriving planted aquarium fish tank with fish that won't eat your plants. Discover the best species for a living ecosystem. Start planting today!
Aquarium Plant Fertilizer: How to Dose Without Harming Fish
Learn how aquarium plant fertilizer works, choose liquid or root tabs, dose safely around fish, and prevent algae. Build a healthier planted tank today.
Aquarium Siphon Guide: Clean a Planted Tank Without Uprooting Plants
Use an aquarium siphon without uprooting plants or stripping aquasoil. Learn safe flow, timing, and cleaning steps for a healthier planted tank today.
Aquarium with Plants and Rocks: Build a Natural Tank
Set up a beautiful aquarium with plants and rocks using our practical guide. Learn safe rock types, planting tips, and layout tricks. Build yours today!
Aquarium With Stand: 10 vs. 20 Gallons for a Family Fish Tank
Pick an aquarium with stand for your family. Compare 10- and 20-gallon costs, safe stand features, and hardy colorful fish. Start your first tank today.
Best 5 Gallon Fish Tank: Top Picks for Betta & Nano Setups (2026)
Looking for the best 5 gallon fish tank? We review the top kits and tanks perfect for small spaces, bettas, and nano setups. Find your ideal aquarium today.
Best Betta Fish Tank Kits: Top 5 Picks for 2026
We tested the top betta fish tank kits. See which 5-gallon and 10-gallon setups offer the best filtration, heating, and value for your betta.
Betta Fish Tank Setup: Size, Filter, Heater & Water Tips for 2026
Set up the perfect betta fish tank with the right size, filter, and heater. Get science-based care tips to keep your betta healthy and thriving in 2026.
Betta Fish Tank Mates for 40–75 Gallon Community Tanks
Choose safe betta fish tank mates, cycle your 40–75 gallon upgrade, and build a calm community without costly stocking mistakes. Start planning today.
Betta Fish Tank Setup: Step-by-Step Guide for Beginners (2026)
Learn how to set up a betta fish tank the right way in 2026. Tank size, cycling, filters & more — get our complete beginner guide and save your fish's life.
Betta Tank Mates for 10- and 20-Gallon Family Tanks (2026)
Find the safest betta tank mates for 10- and 20-gallon family aquariums, with colorful fish, simple care, and budget tips. Build your kid-friendly tank.
Betta Fish Tank Size Guide: Gallons, Heater & Setup
A complete guide to betta fish tank size, heater temperature, filtration, substrate, cycling, and maintenance for a healthy, long-lived betta.
Betta Types for Office Tanks: Best Low-Maintenance Picks
Compare betta types for a quiet, low-maintenance office tank, from plakats to halfmoons. Choose the best desk fish and build a smarter setup with confidence.
How to Care for a Betta Fish: Setup, Water, Feeding & Tank Mates
Discover exactly how to care for betta fish: proper tank setup, water quality tips, feeding schedule, and health signs. Help your betta live 3–5 years.
How to Change Aquarium Water Without Killing Your Fish
A beginner-friendly guide to changing aquarium water safely — how much to change, how often, and the exact steps to protect your fish.
Endler's Livebearers: Budget Nano Tank Guide for 2026
A practical guide to keeping endler's livebearers in small, budget-friendly nano tanks, covering setup, water care, feeding, breeding, and tank mates.
Female Betta Fighting Fish: Aggression, Sorority Tanks & Care Tips
Female betta fighting fish are feisty, colorful, and surprisingly social. Learn sorority tank setup, aggression tips, and care advice for 2026.
Female Betta Fish: Care, Sorority Tanks & Key Facts
Female betta fish are colorful, fascinating, and surprisingly misunderstood. Learn how to care for them, set up a sorority tank, and avoid common mistakes.
Female Betta Fish: Size, Temperament & Tank Mates Guide
Female bettas grow to 2-2.5 inches, are far less aggressive than males, and can live solo or in sorority groups of 5+ in a 10-gallon tank.
Best Fish for Betta Tanks: 12 Safe Tankmates That Actually Work
Discover the best fish for betta tanks in 2026. From corydoras to ember tetras, find safe tankmates that won't trigger betta aggression. Full guide!
Fish That Can Live With Cichlids: The Complete Tank Mate Guide
Discover which fish can live peacefully with cichlids. From African species to dwarf cichlids, find your perfect tank mates. Start your community tank today!
Best Fish to Keep With Tetras: Peaceful Tankmates for a Community Tank
The best fish to keep with tetras include corydoras, rasboras, and dwarf gouramis. Get our updated 2026 expert guide to building a peaceful community tank.
How Long Do Goldfish Live? Bowl vs. Tank Lifespan Explained
Goldfish are often sold as "starter pets" — cheap enough to replace, easy to ignore. Most end up in a small bowl on a shelf, fed daily, and forgotten until…
How to Lower pH in Your Aquarium (Without Stressing Your Fish)
Learn how to lower pH in your aquarium safely using driftwood, peat, CO2, and RO water. Step-by-step guide for freshwater keepers. Read now.
Live Scallops for Aquariums vs. Seafood: Full Guide
Live scallops sold for aquariums and for food are completely different products with different survival needs — here's how to tell them apart before buying.
Live Shrimp for Freshwater Tanks: Best Species & Care
Discover the best live freshwater shrimp for your tank in 2026. Species guide, care tips, water parameters, and where to buy. Start your shrimp colony today!
Can Scallops Stay Alive in a Fish Tank? What Every Aquarist Must Know
Discover if live scallops can survive in your fish tank, how to keep them alive for fish food, and the best freshwater bivalve alternatives. Read now.
What Fish Can Live With Bettas? 40-75 Gallon Community Tank Guide
What fish can live with bettas in a 40-75 gallon tank? Compare safe tank mates, stocking plans, and upgrade steps. Build your community tank safely today.
Lighting schedules, water temperature, heater choices, and water chemistry parameters.
10 Cutest Freshwater Fish That Will Steal Your Heart (With Care Tips)
Looking for cute fish for your freshwater tank? Discover our top 10 cutest species in 2026, with care tips, tank size guides, and compatibility charts.
Fish With Big Lips: 8 Fascinating Freshwater Species Worth Keeping
Discover 8 freshwater fish with big lips, from Kissing Gouramis to Red Devil Cichlids. Learn care tips, tank sizes, and what those lips actually do.
What to feed at every life stage — flakes, pellets, frozen foods, live foods, and schedules.
Betta Fin Rot: Causes, Treatment & Recovery Timeline
A step-by-step guide to spotting betta fin rot, treating it with water changes and medication, and knowing when your betta is truly healing.
Betta Fish Diseases and Health: Spot, Treat & Prevent
Learn to spot, treat, and prevent betta fish diseases with this expert guide. Covers fin rot, ich, velvet, bloat, and more. Start protecting your fish today.
Fin Rot in Betta Fish: Symptoms, Causes & Treatment
A complete guide to spotting, treating, and preventing fin rot in betta fish, covering causes, symptoms, treatment stages, medications, and prevention.
Betta Fin Rot: Causes, Symptoms, and How to Treat It
Fin rot is a common bacterial infection in bettas caused by poor water quality and stress. Here's how to spot it early and treat it before it spreads.
What to Feed Betta Fish: Complete Feeding Guide (2026)
A complete guide to feeding betta fish — the right pellets, freeze-dried treats, portion sizes, and a weekly fasting day to prevent bloating and stay healthy.
Betta Fish Food: What to Feed, How Often, and What to Avoid
Learn exactly what betta fish eat, how often to feed them, and which foods to avoid. Expert feeding tips for a healthier, more vibrant betta fish in 2026.
Live Crickets for Fish: Which Species Eat Them and How to Feed Safely
Find out which freshwater fish can eat live crickets safely, how to gut-load them for best nutrition, and top cricket suppliers. Shop feeder crickets today!
Fish Food for Fighter Fish: What Bettas Actually Need to Thrive
Feed your fighter fish right: discover the best betta fish food types, feeding schedules, and top 2026 product picks for vibrant color and long-term health.
Best Siamese Fish Food: Complete Betta Feeding Guide
Feeding your Siamese fighting fish the right food is key to their health and color. This guide covers the best betta foods, how often to feed, and what to avoid.
Water quality, common diseases, tank cycling, lifespan, and daily care routines.
Anubias Plant Care: How to Grow, Plant, and Keep It Alive
Discover why Anubias is the #1 low-light aquarium plant for beginners. Care tips, species comparison, and planting guide. Start growing Anubias today!
How Long Do Betta Fish Live? Lifespan Facts + 6 Tips to Help Yours Live Longer
Betta fish live 2–4 years on average, but many die early from preventable mistakes. Learn the key factors and 6 proven tips to extend your betta's lifespan.
Platies: The Beginner's Guide to Keeping These Hardy Fish Alive
Platies are the best freshwater fish for beginners — hardy, colorful, and forgiving of mistakes. Learn tank setup, feeding, and care tips to get started.
Why Is My Shrimp Dying? A Beginner's Acclimation Guide
Most new shrimp die from rushed acclimation, copper exposure, or ammonia spikes in uncycled tanks. Slow drip acclimation and stable water fix nearly all of it.
Top-rated tanks, filters, heaters, and gear — vetted and ranked.
Best 5 Gallon Fish Tank: Top Picks for Betta & Nano Setups (2026)
Looking for the best 5 gallon fish tank? We review the top kits and tanks perfect for small spaces, bettas, and nano setups. Find your ideal aquarium today.
Best Betta Fish Food: Top Picks for Color and Health
Discover the best betta fish food for vibrant color, strong immunity, and long life. We break down pellets, frozen, freeze-dried, and live food options.
Best Betta Fish Tank Kits: Top 5 Picks for 2026
We tested the top betta fish tank kits. See which 5-gallon and 10-gallon setups offer the best filtration, heating, and value for your betta.
Best Fish Tank With Stand: 5 Sturdy Combos for 2026
Shop the best fish tanks with stands for 2026, from budget cabinets to 120-gallon showpieces. Compare weight capacity, price, and setup tips before you buy.
Where to buy, what varieties cost, and what to look for in healthy fish.
Angelfish Types: Every Variety Explained (With Care Differences)
Discover all the types of freshwater angelfish — from Silver to Koi, Platinum, and Altum. Learn which variety fits your tank and avoid costly mistakes.
Koi Betta Fish: Cost, Rarity, Care & Buying Guide
Koi bettas are marble-patterned Betta splendens, not a separate species. Learn true rarity, pricing ($15-$250+), care needs, and buying red flags.
Additional guides and resources on this species.
Fin Rot Medication for Bettas: What Actually Works
A practical guide to treating betta fin rot — causes, symptoms, the best medications like Kanaplex and Fin & Body Cure, and how to prevent it from coming back.
Betta Fish Types: Every Breed, Tail Shape, and Color Pattern Explained
Discover every type of betta fish breed, tail shape, and color pattern. Compare Halfmoon vs Crowntail vs Plakat and find the perfect betta for your tank.
Fighter Fish Fight: Why Bettas Fight and How to Stop It
Why do fighter fish fight? This guide covers betta aggression science, early warning signs to spot, and proven prevention strategies every keeper needs in 2026.
Fighter Fish Varieties: Every Betta Type Explained for 2026
Explore all fighter fish varieties — Veil Tail, Halfmoon, Crown Tail, and more. Our 2026 guide covers every betta type, care tips, and tank setup needs.
Why Do Some Fish Have Big Foreheads? Nuchal Hump Guide
A big forehead in fish is a fatty nuchal hump tied to maturity, hormones, and genetics — seen in flowerhorns, humphead wrasse, and gibbiceps plecos.