Can Altum Angelfish live with Purple Vampire Crab?
Caution — with care
Why
- Purple Vampire Crab can grab Altum Angelfish while it sleeps — only fast mid/top-water fish are reasonably safe.
- Almost no shared temperature: Altum Angelfish wants 82–88°F and Purple Vampire Crab wants 75–82°F, so only 82°F suits both — too fine a margin to actually hold.
- No overlapping pH: Altum Angelfish wants 4.5–6.5 but Purple Vampire Crab wants 7.5–8.
- No overlapping water hardness: Altum Angelfish wants 1–5 dGH but Purple Vampire Crab wants 8–15 dGH.
Side-by-side
| Altum Angelfish | Purple Vampire Crab | |
|---|---|---|
| Temperature | 82–88°F | 75–82°F |
| pH | 4.5–6.5 | 7.5–8 |
| Hardness (GH) | 1–5 dGH | 8–15 dGH |
| Adult size | 7" | 1.5" |
| Temperament | Peaceful | Semi-aggressive |
| Min tank | 75 gal | 20 gal |
Together, plan on at least 75 gallons.
How to make it work
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: An adjustable heater · GH remineraliser
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Design a tank with Altum Angelfish, Purple Vampire Crab →Everything compatible with Altum Angelfish · …with Purple Vampire Crab