When a fish starts looking unwell, the standard process goes something like this: search the symptoms, find a forum thread from 2013, get three conflicting diagnoses, add one treatment, wait, add another, hope for the best.
It’s not a great system. And for fish keeping at any serious level — Discus, Arowana, L-number Plecos, sensitive Stingrays — the cost of getting it wrong isn’t just money. It’s fish that took years to source and grow on.
We built the MTF Fish Health Diagnostic to replace that guesswork with a structured, expert-level report in under a minute.
Upload a photo of the affected fish and describe what you’re observing — behaviour changes, visible symptoms, how long it’s been happening, any recent changes to the tank. The AI analyses the image and your description together, cross-references against known tropical fish conditions, and generates a complete diagnostic report.
The whole process takes under 60 seconds.
Every report from the Fish Health Diagnostic includes six sections:
The most likely condition identified from your photo and description. Where multiple conditions are plausible, the report lists them in order of likelihood and explains the distinguishing factors.
Not every illness requires immediate action. The report tells you whether this is a monitor-and-watch situation, something to treat over the next 24-48 hours, or a case that needs immediate isolation and intervention.
Exactly what to do, in order. Not a list of options — a sequence. Treatment approach, duration, what to watch for during recovery, and when to reassess.
What to use, what to avoid, and why. For UK-based fishkeepers, the report focuses on what’s actually available rather than US-market-only products. Dosage guidance included.
Many fish illnesses are triggered or worsened by water quality. The report covers what to test, what ranges to aim for during treatment, and whether a water change or specific adjustment is part of the treatment protocol.
A realistic assessment of outcome based on the diagnosis and urgency level. This isn’t always what you want to hear, but it’s more useful than vague reassurance.
The Diagnostic covers a broad range of tropical fish health issues, including:
It handles both freshwater tropical species and marine fish, covering common species like Cardinal Tetras, Discus, Altum Angelfish, Corydoras, and L-number Plecos through to oddballs and large specimens.
Step 1. Visit mtf-aquatics.co.uk/fish-diagnostic
Step 2. Upload a clear photo of the affected fish. Good lighting and a side-on angle give the best results. Multiple photos can be submitted if the condition is visible from more than one angle.
Step 3. Describe what you’re seeing: symptoms, behaviour changes, duration, recent tank events (new fish added, water change, temperature fluctuation). The more detail you provide, the more accurate the diagnosis.
Your report is generated and available within 60 seconds.
Single report — pay once, get the report for the case in front of you. No subscription, no commitment.
VIP unlimited membership — unlimited diagnostic reports. Worth considering if you’re keeping a large collection, running multiple tanks, or working with species that are prone to health issues. The membership pays for itself quickly if you’re using it regularly.
The Fish Health Diagnostic provides AI-generated guidance based on your photo and description. It is not a substitute for veterinary assessment in cases of genuine emergency or where the condition is deteriorating rapidly despite treatment.
For the vast majority of fish health cases — where the alternative is forum guessing or doing nothing — it provides a substantially better starting point than anything else currently available to hobbyists.
If in doubt, act on the urgency level the report gives you. If it says escalate, escalate.
Use code AITOOLS-BLOG at checkout for free UK shipping on any order over £100 (expires 9 June 2026).
Get a fish health diagnosis → mtf-aquatics.co.uk/fish-diagnostic
Powered by Claude AI (Anthropic). Built by MTF Aquatics.
Can it diagnose any species of fish? The Diagnostic works across freshwater tropical species and marine fish. It performs best on well-documented species — Discus, Cichlids, Tetras, Plecos, Arowana, Corydoras — but can provide guidance on less common species too.
What if the photo quality isn’t great? The AI works with available information. A blurry photo with a detailed symptom description will still produce a useful report, though a clear image improves diagnostic accuracy for visually-identified conditions like white spot or velvet.
Is the diagnosis always accurate? No AI tool can guarantee diagnostic accuracy. The Diagnostic is trained across a wide range of conditions and performs well on common presentations, but fish health is complex and some conditions present atypically. Use the report as expert-level guidance, not a definitive verdict.
Can I use it for multiple fish in the same tank? Yes. Run a separate diagnostic for each affected fish if the presentations differ. If the whole tank is affected similarly, one diagnostic is usually sufficient.
Does the VIP membership auto-renew? Membership details and renewal terms are shown at checkout.
