Quick answer: Goldfish and guppies have some overlap in published temperature ranges, but they are generally not recommended as long-term tank mates. Goldfish ...

The aquarium nitrogen cycle explained simply, plus a step-by-step fishless cycling guide to set up a safe, stable tank in 2–6 weeks.

Quick answer: Usually, a small accidental overdose of dechlorinator will not kill fish. Many aquarium water conditioners have a wide safety margin, but a very ...

Quick answer: Cyanoacrylate-based super glue is commonly used safely in aquariums when the product and application are appropriate. Aquarium-safe super glue ...

Quick answer: A healthy adult angelfish can usually handle several days without food, and around a week may be manageable in a stable tank. However, surviving ...

Quick answer: A single angelfish, a compatible bonded pair, or a larger group can all work depending on the aquarium. For group keeping, about five or six ...

Quick answer: Aquarium shrimp are expensive mainly because of grade. High-grade lines — such as SS or SSS Crystal Red, Blue Bolt, or Bloody Mary — take many ...

Quick answer: Yes, goldfish can eat other fish — especially eggs, fry, and fish small enough to swallow. But goldfish are not aggressive, fish-hunting ...

Quick answer: About five or six guppies suit a 10-gallon tank. The old "1 inch of fish per gallon" rule points to roughly six or seven, but it's only a rough ...

Quick answer: A fish usually survives several hours — commonly about 6 to 9 — in a normal sealed transport bag. A store's oxygen-packed bag can last a day or ...

Quick answer: Fish can turn black before dying for several reasons, but color change alone cannot identify the cause. Test ammonia and nitrite immediately, ...