Breeding / Snails
Snails · Very easy

Breeding the great pond snail

Egg-laying hermaphrodite: lays sausage-shaped gelatinous egg masses on surfaces; prefers to outcross but can self-fertilise. Eggs to breeding adults can take as little as two months.

Step by step

Pairing

Any two.

Breeding tank

Cool tank or pond.

What starts it

Warm water.

Eggs and young

Each gelatinous egg mass holds about 100-150 eggs in lab snails (up to about 300 in the wild); 2-3 masses a week; eggs hatch in about 11-12 days (lab) to about three weeks.

Raising the fry

Young snails graze.

Common mistakes
  • Heat above 24 C

Male or female

Simultaneous hermaphrodite: every snail is both male and female, and it can also self-fertilise, so there are no sexes to tell apart.

Can I breed it in my tank?

  • Good for a first breeding project.

Day-by-day plan

Typical for snails

  1. Day 0Egg clutch

    Clutches appear on glass, plants or above the waterline.

  2. Day 14Hatching

    Baby snails hatch in about 2–4 weeks. Too many? Feed less.

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

Simulator: guided

Stage 1 of 2Egg clutch

Clutches appear on glass, plants or above the waterline.

Simulator: try it yourself

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

About 16 young raised80% hatched · 50% of fry survived
  • They spawned.
  • Fry had nowhere to hide.

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