Use the live Index
The official game description sets collecting animals in the Index as a goal. Look for a missing entry and use it to make the next run specific, then inspect your collection after delivery.
Best versus rarest pets
A base-income decision and a rarity goal are not the same thing. Compare the animal’s live display with your purpose. The collected official sources do not provide a complete pet tier list or rarity probabilities.
Merging and special animals
Collected gameplay research mentions merging, while video titles mention Omega. Check the current machine, inputs, and result preview in the game. Do not assume a recipe, weight formula, or guaranteed output from a title.
Fish income and models
A complete fish Index, fish income table, and downloadable pet model library have not been verified. Use the live Index for actual names and values; this page does not present missing data as an authoritative list.