Bile Knifefish

Bile Swimmer

Blind Pipe Boa

Brace Rat

Brood Rat

Canopy Moray

Coil Rat

Column Rat

Conduit Lamprey

Conduit Rat

Drain Eel

Drape Rat

Fetch Rat

Flux Serpent

Flux Vole

Gantry Mouse

Lacquer Eel

Lacuna Threadworm

Ledger Rat

Mesh Runner

Moult Rat

Overflow Serpent

Pack Shrew

Pack Vole

Pale Canal Rat

Pale Sump Rat

Razor Rat

Seam Runner

Seep Worm

Silt Moccasin

Slag Rat

Sump Boa

Sump Rat

Tangle Rat

Tunnel Krait

Vault Rat

Volt Lamprey

Witness Rat

Bile Swimmer

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creature urban_fauna adaptation drainage chemical_adaptation indicator_species pharmaceutical

rating	0
vote count	0
name	Bile Swimmer
aliases	yellow eel chemical snake acid gut
origin	adaptation
threat level	negligible
story hooks	A community health worker has been mapping Bile Swimmer density as a contamination proxy and discovered a pattern that suggests a Helix facility is illegally dumping a compound not on any public safety registry. Someone has engineered a variant Bile Swimmer with an altered microbiome and released it into the drain system — but instead of metabolizing contamination, it's metabolizing something it shouldn't be able to touch.