White Cloud Mountain Minnows: The Unheated River Tank Fish
White Clouds are tough, colorful, cheap and happy in cool water without a heater. Tank size, temperature, tankmates, food and breeding for this classic beginner fish.
FishLife
26 articles
Best Fish for Strong-Current Tanks
Some fish hate current. These love it. The best fish and invertebrates for river tanks and high-flow setups, what each needs, and how to mix them.
How to Quarantine New Fish
One sick new fish can wipe out a whole tank. How to set up a simple quarantine tank, how long to keep new fish there, what to watch for, and when to…
Hillstream Loaches: Care Guide for Fast-Water Tanks
Hillstream loaches are built for fast, cool, oxygen-rich water, which makes them perfect river tank fish. Temperature, flow, tank size, food and tank mates.
Are Catfish Really Bottom Feeders?
Catfish often feed on the bottom, but channel and blue catfish are omnivores that hunt fish as they grow. Here's what they eat and why it matters.
Best Fish Food: Staples Worth Buying, and How to Keep Them Working
Five fish food staples for tropical, goldfish, guppy, and cichlid tanks, plus how to read labels, feed correctly, and keep food fresh.
Do Fish Hibernate?
Have you ever questioned what happens to fish as the cold, winter months approach? Fish are cold-blooded creatures specifically known as ectothermic poikilothermic vertebrates , who depend on their environment to maintain…
Are Fish Nocturnal?
Whether you’re thinking about goldfish in an aquarium or wild fish living in the depths of the ocean, one question that everybody has wondered at some point is “Are fish nocturnal?”. Well,…
Are Fish Omnivores?
When it comes to the diet of a fish, they can eat various different foods, depending on the species that you are dealing with. Not all fish are the same, and they…
Do Fish Need Light? Yes, and They Need the Dark Just as Much
Fish need a steady day and a truly dark night, not constant light. Learn how many hours to run your tank light and what plants change.
Best Fish for a 55-Gallon Tank, and the Popular Picks That Outgrow It
Which fish fit a 55-gallon tank as adults, which popular picks outgrow it, and what to do when one gets too big.
What Do Crabs Eat in a Fish Tank? It Depends on Which Crab You Bought
Most aquarium crabs are omnivores that do well on sinking pellets, plus brine shrimp, bloodworms and algae. Learn how the diet varies by species.