Tag Archives: spotted ratfish

New at the Seattle Aquarium's Closer Look Table: Spotted Ratfish Egg Cases

Now at the Aquarium are six egg cases from several female spotted ratfish, Hydrolagus colliei. Each tough egg case contains one embryo which may take a year to mature. Like sharks, ratfish produce a small number of young, typically just more »

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Spotted ratfish 101

Spotted ratfish, Hydrolagus colliei, are cartilaginous fishes (meaning their skeletons are composed of cartilage) related to sharks, rays, and skates. Males have a club-like structure on the snout called a tenaculum, which they use to hold the female’s pectoral fin more »

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