Molly Disease & Symptom Checker

What is the Molly Disease & Symptom Checker?

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

Mollies generally live 3-5 years when they are well looked after. As an omnivore, what a molly needs from its diet changes across its life stages. Mollies are livebearers that prefer harder, slightly alkaline water and often do noticeably better with a little aquarium salt. They grow larger than guppies and need at least 75 liters. The usual suspects for this species are shimmies from poor water chemistry, ich, fin rot, so any noticeable change is worth following up.

How does the Molly Disease & Symptom Checker work?

Where a schedule is produced, it follows commonly recommended cadences for mollies; where a score is produced, it uses a simple, transparent scale rather than a black-box formula. Treat the result as a well-founded estimate. Every molly is an individual, and your vet's judgement outranks any online tool.

What changes the answer

• 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 Molly 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 molly.

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

Before you rely on this

Averages hide a lot of variation. The figure here reflects what is typical for mollies, but your molly 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.