Courses
Underground Aquarium · Free course
Fish Health 101
Spot problems early and know what to do
~35 min 7 lessons Certificate + profile badge
Learn what a healthy fish looks like, why water problems cause most sickness, and how to handle the five health problems beginners see most. Plus how to set up a simple hospital tank.
Free · No prior experience needed
What you'll learn
- 1Know what normal looks like
- 2Check the water first
- 3Ich: white spot disease
- 4Fin rot and fungus
- 5Bloat, dropsy and swim bladder
- 6The hospital tank
- 7Final exam
Earn your certificate
Finish every lesson and pass the quizzes to earn a shareable certificate and a “Fish Medic” badge on your profile.