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Breeding / Shrimp
Red swamp crayfish
Shrimp · Very easy

Breeding the red swamp crayfish

Mates in open water; the female attaches 100-500 fertilised eggs to her swimmerets, often inside a burrow. Eggs hatch after about 3 weeks; the young stay attached through two moults and remain with the mother up to eight weeks. Matures in as little as 3 months and can spawn year-round in warm climates.

Full species page

Step by step

Pairing

One male and 2 females in a large tank with hides.

Breeding tank

Large tank with caves and sand; separate female when berried.

What starts it

Seasonal temperature changes and good feeding.

Eggs and young

Usually 200-500 eggs (about 100 in small females, up to 500 in a 10 cm female); incubation about 21 days.

Raising the fry

Juveniles are tiny crayfish; feed meaty foods and keep separate to prevent cannibalism.

Common mistakes
  • Mixing males
  • Too little cover
  • Poor water quality

Male or female

Males have bigger claws than females. Sperm is released at the base of the male's 5th walking legs; the female's opening is at the base of the 3rd walking legs.

Can I breed it in my tank?

  • Good for a first breeding project.

Day-by-day plan

Typical for shrimp

  1. Day 0Berried female

    Eggs are carried under the tail. Keep the water stable and don't move her.

  2. Day 21Hatching

    After about 2–4 weeks tiny shrimp hatch. They graze on biofilm and moss.

  3. Day 30Growing

    Keep a sponge on the filter intake. Feed powdered shrimp food a little at a time.

  4. Day 90Adults

    They can breed themselves at about 3 months.

A general guide for this breeding type. Days change with temperature and species.

Simulator: guided

Stage 1 of 4Berried female

Eggs are carried under the tail. Keep the water stable and don't move her.

Simulator: try it yourself

Set up a virtual breeding tank and see what would likely happen.

About 17 young raised80% hatched · 70% of fry survived
  • A female became berried.

An educational estimate from the breeding rules, not a promise.