Fish Breeding and Aquarium Guides

Losing fry every day? Match their age and what you see to the likely cause, then fix the water, food, or setup before more are lost.

Newly hatched fry live off their yolk at first. See the sign they're ready to eat, what to offer first, and how often to feed in the first month.

Baby goldfish stay brown or bronze for months. See when the orange usually shows up, why some fish change faster, and which dark patches need a vet.

Water temperature sets the pace. Compare hatch times measured at five temperatures, learn the signs eggs are on track, and see why some never hatch.

Fresh eggs all look alike at first. Learn the signs that show which ones are developing, what white or fuzzy eggs mean, and what to do with each.

Newly hatched brine shrimp are a classic first live food. Learn how to hatch them in about a day, when to start a batch, and how to feed without fouling the nursery.

Found eggs after a spawn? Protect them from the adults, prepare a nursery, and recognize when the young are ready for their first food.

Turn acrylic yarn into an egg-collecting tassel with a book, scissors, and a suction cup. Follow the steps and check the finished mop before use.

Grow a separate freshwater algae supply with a known starter, suitable nutrients, and steady light. Use it to support a live-food plan for young fish.

Keep a new clutch above water, decide whether to hatch it, and prepare for the tiny snails before they emerge.

Compare Fantails, Orandas, Black Moors, and single-tailed varieties, plus the conditions for keeping snails or schooling fish with them.

Choose fine sand for an everyday display, or a bare bottom when easy cleaning matters most. See where gravel fits and what to avoid.