The Goldfish Grendels are a genetic breed for Creatures 3 and Docking Station, made by Grendel Man. They are an aquatic grendel and will suffocate in the air - the Water Eggs agent by Marcus is highly recommended for their care. They have a friendly temperament and rarely hit others or get angry. They mostly eat bugs, but can eat just about anything, and enjoy seeds and fruit as well. They are fast breeders, and are sexually mature at adolescence.
They have a weaker immune system than normal grendels - they take more damage from antigens, and are susceptible to a new disease called "ich", which occurs whenever the grendel is infected with another toxin. There is no cure for ich barring the included Ich Medicine.
They come with a Fish Food Vendor which creates bug flakes for them to eat, and the Ich Medicine to cure them of the ich toxin.