Guppy Disease & Symptom Checker

What is the Guppy Disease & Symptom Checker?

The Guppy Disease & Symptom Checker matches visible symptoms in guppies to likely common diseases. Small, regular health checks and a consistent care schedule catch problems earlier than waiting for obvious symptoms to appear.

A well-cared-for guppy usually lives somewhere between 2 and 3 years. As an omnivore, what a guppy needs from its diet changes across its life stages. Guppies are hardy livebearers that breed relentlessly, so a mixed-sex tank multiplies fast. A 40 liter tank with gentle filtration suits a small group, ideally two or three females per male. Keep an eye out for fin rot, ich, guppy disease (tetrahymena). These are the conditions guppies are most commonly seen for.

How does the Guppy Disease & Symptom Checker work?

Where a schedule is produced, it follows commonly recommended cadences for guppies; where a score is produced, it uses a simple, transparent scale rather than a black-box formula. The math is only as good as what you feed it, so an accurate, recent input matters more than the formula itself.

What affects the result

• Age: younger and senior animals typically need more frequent checks than a stable adult
• Existing health conditions: which may call for a tighter schedule than the general default
• Lifestyle factors such as indoor/outdoor access, which affect exposure to parasites and injury
• Your veterinarian's specific recommendations, which should always take priority over a general default

How do you use the Guppy Disease & Symptom Checker?

1. Answer "Any breathing difficulty?"
2. Pick your eating and drinking (Normal, Reduced for under a day, Nothing for over 24 hours, ...)
3. Pick your alertness (Bright and responsive, Quieter than usual, Lethargic, hard to rouse, ...)
4. Pick your most concerning visible sign (None, Mild discharge or scratching, Vomiting, diarrhea or swelling, ...)
5. Answer "How long has this been going on?"
6. Press Calculate, then read the result alongside the sources listed below

Worth doing: jot down the date and the result each time. A single number tells you little, but a trend across a few months tells you a lot about your guppy.

For related questions, see the other health tools or browse every guppy tool.

Before you rely on this

Averages hide a lot of variation. The figure here reflects what is typical for guppies, but your guppy may sit well outside it for perfectly ordinary reasons. Use the result to spot changes over time in your own animal rather than to compare it against other people's pets.