Fishician® — Your Complete Aquarium Companion

Fishician is a free web app that helps fishkeepers set up, stock, and maintain healthy aquariums — freshwater and saltwater. Track your tanks, log water tests, and get AI-assisted fish health guidance in one place.

What you can do with Fishician

• Manage aquariums: record tanks, livestock, and equipment; see stocking levels and maintenance schedules at a glance.
• Track water parameters: log ammonia, nitrite, nitrate, pH, temperature and more, with trend charts over time.
• AI fish health scan: describe symptoms or upload a photo and get an AI-assisted analysis with suggested next steps. Not a substitute for a qualified aquatic veterinarian.
• Compatibility checker: build a stocking plan across 600+ freshwater and saltwater species with temperament, tank size, and care-need checks.
• Calculators and guides: aquarium volume, current-label ratio math, species and food-label feeding checks, equipment planning references, source-linked care guides, and a full tank builder.
• Community: share your tanks, join species groups, and ask questions in the fishkeeping forum.

Free to use

Core tools work without an account. A free account adds cloud sync, AI health analysis, and community posting. This page loads the full application when JavaScript is available.

Source-linked public guides

• Beginner aquarium setup
• Aquarium cycling and water testing
• Stocking and compatibility
• Routine maintenance and observation

Fishician separates source-linked editorial guides, working catalog data, user-generated community posts, and AI output. Unreviewed species records are excluded from search distribution until their care claims and sources pass the published editorial requirements.

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