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Tethys Shallows

A warm, shallow inland sea under a yellow sun and Earth-like gravity. Tidal mudflats meet brackish lagoons; oxygen is plentiful in the water, scarce in the thick muck.

Lagoon-Bound Gulpfish

Evo 3FishEats anythingShallows / ShoreResilient

Shaped by 🏝️ isolation

This isolated Gulpfish has adapted to a more sedentary life, relying on its enlarged mouth to exploit any available food source in its shrinking territory.

reduced pelagic stageenhanced burrowinglarger mouthhigher fecundity15 cm
Size
15 cm
Diet
generalist
Habitat
isolated brackish lagoons and mudflats
Moves by
powerful undulation and shallow burrowing

Why it evolved

Cut off from the wider Tethys Shallows, this population faces increased competition and potential habitat loss. Selection favors individuals that can more efficiently exploit remaining resources and avoid predation by the Verdant Tidewallow Gulpfish. Enhanced burrowing allows them to hide from predators and access the oxygen-scarce muck for food. The reduced pelagic stage conserves energy and resources when dispersal is no longer viable, a trade-off for potentially slower growth compared to the Verdant Tidewallow. The warm, shallow waters of Tethys Shallows provide the necessary conditions for these adaptations to persist, though reduced mobility is a cost.

What changed from Tidewallow Gulpfish

Gained:+ reduced pelagic stage+ enhanced burrowing+ larger mouth+ higher fecundity+ 15 cm
Lost:enlarged mouthaccelerated growthpelagic juvenile stageincreased fecundity18 cm
  • Size: 18 cm 15 cm
  • Habitat: tidal lagoons and mudflats isolated brackish lagoons and mudflats
  • Moves by: powerful undulation powerful undulation and shallow burrowing
🐟MudfishEvo 1🐟Tidewallow …Evo 2🐟Gasping Mud…Evo 2🐟Lagoon-Boun…Evo 3🐟Brackish Gl…Evo 6🧬🐟Famine FinsEvo 3🐟Tethys Bloo…Evo 4🐟Tidal Shift…Evo 7🐟GulpfinEvo 4🧬🐟Tethys Glim…Evo 5🐟Verdant Tid…Evo 5
  • resilient
  • strained
  • fragile
  • β˜… canon
  • 🧬 hybrid
  • πŸ’€ extinct
Drag or scroll to move Β· Tab + Enter for keyboard Β· click to select, double-click to openView as list11 species

You choose the situation, not the result. Selection acts on Lagoon-Bound Gulpfish; the descendant appears above.

Climate

Resources & space

Predators & life

Habitat & extremes

Mate Lagoon-Bound Gulpfish with another branch of the same lineage to make a hybrid.