An eel’s change of hours
An aberration can ask for a different fishing window from its original. The eel family offers a reason to read both entries.
Grey Eel is active by day and night. Barbed Eel, its aberration, is listed for daytime. The family relation does not make their windows identical.
Both live in Shallow water in The Marrows, both take rod or trawl, and both occupy three slots. That familiar outline makes the changed window worth noticing: compare the conditions as carefully as the creatures.