# Who lives in a sponge under the sea? Tiny Caribbean fish and their microscopic neighbors

Source: [Biology News - Evolution, Cell theory, Gene theory, Microbiology, Biotechnology](https://phys.org/news/2026-11-sponge-sea-tiny-caribbean-fish.html) · 2026-11-13 · Life
Page: https://themorning.science/story/who-lives-in-a-sponge-under-the-sea-tiny-caribbean-fish-and-their-microscopic-ne-1c2d9dc9f87e3e44
Kind: research · Impact: low

## In brief

- Two new studies involving Newcastle University marine scientist Dr. Theresa Rueger examine the tusked goby and its host sponge.
- The studies report that the goby's relationship with its sponge host shapes almost every aspect of the fish's life.
- The fish and its microscopic neighbours live in the Caribbean.

## Why it matters

The findings show how a host sponge and its associated microbes can shape the biology of a resident animal, which is useful context for research on symbiosis and host-associate relationships.

## Coverage

- [Who lives in a sponge under the sea? Tiny Caribbean fish and their microscopic neighbors](https://phys.org/news/2026-11-sponge-sea-tiny-caribbean-fish.html) — Biology News - Evolution, Cell theory, Gene theory, Microbiology, Biotechnology, 2026-11-13

Tags: marine biology, symbiosis, sponges, microbiome, caribbean

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science