How to Breed Hillstream Loaches?

Hillstream loaches are a group of fish belonging to the family Balitoridae. They are naturally found in rivers or fast-moving streams, where they cling to rocks as they scavenge for food. Hillstream loaches have streamlined bodies and usually have large fins that fan away from their sides, giving them a striking appearance. These loaches are sought after because they tend to remain small and can help keep algae in check. Because they require specific environments in which to breed, persuading Hillstream loaches to spawn can be tricky.

Things You'll Need

  • Breeding aquarium
  • Pebble substrate
  • Smooth rocks and driftwood
  • Strong filtration system
  • Strong aeration system
  • Thermometer
  • Water testing kit
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Instructions

    • 1

      Set up a breeding aquarium. This aquarium should be about 55 gallons in size to accommodate two Hillstream loaches, and must be larger for more loaches.

    • 2

      Fill the bottom of the aquarium with a substrate of small, round pebbles. Add smooth rocks or driftwood to the bottom of the aquarium. These features mimic the natural habitat of the Hillstream loaches, making the fish more comfortable. The substrate will also provide a place for the egg nest, while the rocks and driftwood will give the fish places to cling to.

    • 3

      Set up filtration and aeration systems that create a strong water flow from one side of the aquarium to the other. Hillstream loaches thrive in fast-moving, well-aerated water, and will only breed when these conditions are met. There are several different diagrams, which use the filtration and aeration systems as well as series of pumps, available online to show you how to achieve this affect. You can also design your own flow system using a strong filtration system.

    • 4

      Use a thermometer to measure the water temperature. Temperatures that are too warm can have a negative effect on the fish. The water should remain between 72 and 76 degrees Fahrenheit.

    • 5

      Use a water testing kit to measure the pH level of the aquarium water. The pH level should be between 6.5 and 7.5. Additives can be used to adjust this level if necessary.

    • 6

      Place at least one male and one female Hillstream loach in the breeding aquarium. Males are slimmer than females. Males also have many facial tubercules, which resemble small spikes near the fish's mouth. Females only have two tubercules. Males also tend to be brighter in color. You can also keep the Hillstream loaches in larger groups, but males may fight among themselves.

    • 7

      Wait for the Hillstream loaches to breed. The male fish will begin to dance around the female fish, enticing her near. When he catches her attention, she'll start to follow him around. He will then dig a nest, or pit, where the eggs will be deposited. The eggs will hatch in about two weeks. Since the parent fishes won't bother the young, they can be left in the aquarium to continue spawning.