Your Shell-Dweller (Multi) Vet-Prep Sheet
Finfern honest freshwater care · finfern.com Shell-Dweller (Multi) — Vet-Prep Sheet
🔍 Find an aquatic / fish vet — before you need one
- Search the WAVMA aquatic-vet finder (the World Aquatic Veterinary Medical Association) — or search "aquatic / fish / exotics vet near me".
- Call ahead and ask the key question: "Do you treat fish?" Few vets do — and ask the exam fee while you're on the phone.
- Find and save one now, while things are calm — not in the middle of a crisis.
📇 Fill this in now — before the crisis
Two minutes now saves ten in a panic. Print it and keep it by the tank.
🚨 Is this an emergency now?
Act promptly — starting with a water test — if you notice any of these:
- A fish that stops defending its shell, hides constantly, clamps its fins, or refuses food: isolate the stressor, and first test your water (ammonia, nitrite, nitrate, pH, GH) rather than assuming disease.
- Any reading of ammonia or nitrite above 0, or a sudden pH/hardness drop: do a water change and address the cause; unstable soft or acidic water is a common hidden problem for this hard-water species.
- Colony-wide, escalating aggression with torn fins: usually a signal of too few shells or too little floor space, so add more shells (3 to 4 per fish), spread them out, and check the male-to-female ratio.
- White spots, rapid gill breathing, flashing/rubbing on the sand, or a film/fungus on the body: treat as a triage warning to check water quality and temperature stability, and seek advice from an aquatic vet or a trusted fish-health resource rather than guessing at medications.
When in doubt, a vet call is never wrong — most issues are reversible if caught early.
🚗 On the way / while you wait
✅ Do
- Test your water NOW — ammonia, nitrite, nitrate, pH and temperature — and correct the obvious (a big source of trouble is ammonia / nitrite).
- Keep the fish in its own stable, dechlorinated tank water.
- Move it to a hospital / quarantine tank if you already have one set up.
- Keep the tank calm and dimly lit — stress makes almost everything worse.
⛔ Don’t
- Don’t tip in OTC, aquarium-shop or forum “cures” blindly — many are harmful or just mask the real problem.
- Don’t make a big sudden water change or swing the parameters.
- Don’t add salt or medication without knowing the cause.
🎒 What to bring
- A recent water-test result — ammonia, nitrite, nitrate, pH and temperature. Water quality is the root of most fish illness and the first thing a fish vet asks about.
- Clear photos and a short video — it may not show the behaviour or symptom in the clinic.
- A note of your setup and exactly what — and how often — you feed.
- Only if the vet advises transporting the fish: the fish in a bag or tub of its OWN tank water.
🗣️ What to tell the vet
A general vet may not know this species. Come ready to explain its correct care:
- Temperature
- 24 to 27 degrees C (75 to 81 degrees F). Many keepers and Lake Tanganyika data centre on 24 to 26 C (75 to 79 F).
- pH
- 7.5 to 9.0, firmly alkaline. Aim for the middle-to-high end, around 8.0 to 8.5, which is also the sweet spot for breeding. This is a hard-water Rift-lake fish, the opposite of soft, acidic South-American dwarf cichlids.
- Hardness
- Hard water: GH roughly 8 to 25 dGH (Aquarium Co-Op says "at least 8 degrees GH"; Practical Fishkeeping cites 15 to 25). Alongside the high, stable pH this mimics mineral-rich Lake Tanganyika water. Soft, acidic water is simply wrong for this species.
- Minimum tank
- A single pair or trio can technically live on a 40 L (about 10 US gal) footprint, roughly 45 x 30 cm (18 x 12 in), which is the SeriouslyFish and Aquarium Co-Op minimum. But these are colony animals, and the bigger-is-better reality is a 20-gallon "long", about 75 L (20 US gal), with a wide floor so a real colony can spread its shell territories. Add tankmates and you want 110 L (about 29 US gal) or more. Floor AREA matters far more than height, so pick the longest, widest tank you can.
- Filtration & flow
- Wants clean, well-filtered, well-oxygenated water but gentle flow at the sand bed. A sponge filter or a baffled hang-on-back is ideal, because a strong outflow scattering the substrate and shells stresses the colony. Keep nitrate low with regular water changes; these fish do best in stable, mature water.
- Diet
- Carnivore / micro-predator. In the wild it sifts sand for tiny invertebrates and zooplankton.
- Tankmates / temperament
- Territorial and feisty despite the tiny size. Each fish claims and vigorously defends a small patch, usually no more than about 15 cm (6 in) across, centred on its shell. Aggression is mostly aimed at its own kind over shells and breeding rights; it is not a fish that will terrorise a whole tank, but it is not a docile "peaceful nano" either.
⚕️ Most fish illness starts with water quality, not infection — bring a recent water test; it's the first thing a good fish vet will ask about. Fish medicine is specialised and few vets treat fish, so call ahead. Many aquarium-shop and OTC 'cures' are harmful or simply mask the real problem, so tell the vet exactly what (if anything) you’ve already added, and treat a sick fish in a separate hospital tank rather than dosing the whole display.
Then note which of the warning signs (above) you are seeing, when they started, and whether they are getting worse.
❓ Questions to ask
- Do you treat fish? If not, can you refer me to a vet who does?
- What are the likely causes — and could my water or setup be the cause?
- What is the treatment plan, the likely cost, and what should I watch for at home?
- How do I prevent this from happening again?