Fishies 0.8.7

field-guide/en-GB/caring/breeding.md

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+# Breeding and partners
+
+_How pairs form, the real odds of an egg, and where to read them._
+
+## Pairs breed by themselves
+
+Breeding is automatic. A female and a male of one species in the same aquarium pair by chance once both are grown, healthy (60% or more) and rested. There is no button to start it: you steer with who lives together, how well they are kept, the Conditioning Box and incubation.
+
+After a clutch each parent rests 48 hours, and the same two fish wait a week before they pair again; either may pair with someone else meanwhile. Your first fish and legendary fish do not breed, and a chance that comes while the aquarium is full is missed, so keep a free place for the egg.
+
+## The odds
+
+Every six hours (00:00, 06:00, 12:00 and 18:00 server time) each ready pair gets one roll at 5.4%. The windows are independent, so the odds add up like this:
+
+- About 1 in 5 within a day (20%).
+- Half of ready pairs lay within 3 days.
+- 79% within a week and 95.5% within two weeks.
+- An average wait of about 4.6 days once ready.
+- With the pair's week between clutches, about 0.6 eggs a week or 2.5 a month.
+
+## What an egg can be
+
+The weaker parent decides the chance. An egg can only step above its care from the lower of its two parents' tiers: two gold parents give one tier up a quarter of the time, diamond parents one tier half the time and two tiers a tenth, purple diamond parents two tiers a fifth. A gold fish paired with a silver one gives no step at all, so raise the weaker parent first.
+
+Incubating a bred egg keeps it until 36 hours and lifts those odds (gold 50%, diamond 70% and 20%, purple diamond 70% and 30%); below gold it gives a 20% chance of a bronze head start. The roll itself is made when the egg is laid and stays secret, so incubating never makes an egg worse. Colour comes from one parent nine times in ten, and each bred generation after the first sells 2% less, never below ×0.90.
+
+## A fair order
+
+When one fish has two ready partners, each six-hour window a fair draw decides which pair rolls first, so neither partner is always ahead. The pace does not change: each pair's own chance stays 5.4% a window.
+
+## Where to read it
+
+Every keeper sees every number:
+
+- The fish card's Family tab lists the partners in its aquarium with each pair's status (growing, resting, the pair's week, unwell, no room, ready) and its odds.
+- A bred egg's card shows what it can hatch as, normal beside incubated.
+- The Breeding app in the Menu shows every pair of every aquarium, the eggs a week, and the pair planner for any female and male of one species you own.
+
+---
+
+In the game: https://fishies.lol/wiki/mechanics/breeding · Fishies 0.8.7
+
+This page is generated. Its text lives in [`locales/en-GB.json`](../../../locales/en-GB.json) under `wiki.topics.breeding`; correct it there.