Fostrets

Fostrets is a fictional genus of small nocturnal mammals endemic to the Fostrian Archipelago in the fantasy setting The Shifting Seas. The name derives from the archipelago language, meaning “night wanderer.” The genus currently includes a single described species, Fostrets luminis.

Description: Adults measure 18–26 cm in body length, with tails of 8–12 cm, and typically weigh 120–210 g. They have soft gray-brown fur, large forward-facing eyes, a short pointed snout, and semi-retractable claws. Their ears are pale and relatively large, aiding acute hearing.

Distribution and habitat: Fostrets inhabit mangrove and lowland forest habitats on several islands of the archipelago, favoring dense undergrowth, fallen logs, and riverbanks where cover is thick and prey is abundant.

Ecology and behavior: They are primarily insectivorous, taking beetles, moths, and spiders, with fruit and small vertebrates eaten opportunistically. They are mostly solitary or found in small family units, relying on vocalizations and scent marking for communication and territory defense. They are adept climbers but descend to the ground to forage.

Reproduction and life cycle: Breeding occurs year-round with a wet-season peak. Litter size is typically 1–2 offspring. Weaning happens at about eight weeks; sexual maturity is reached around nine months.

Conservation and cultural significance: Within the fictional world, Fostrets are considered common in suitable habitat and not currently threatened. They appear in local folklore as symbols of night vigilance and ecological balance. Scientific study of Fostrets contributes to models of nocturnal mammal ecology in island systems.