Can Carnival / Polka Dot Freshwater Crab live with Flash Pleco (L204)?
Not recommended
Why
- Carnival / Polka Dot Freshwater Crab hunts along the bottom and will catch the bottom-dwelling Flash Pleco (L204), especially at night.
- No overlapping water hardness: Carnival / Polka Dot Freshwater Crab wants 8–15 dGH but Flash Pleco (L204) wants 6–7.5 dGH.
- Only a narrow pH overlap — keep both around 7.5–7.6.
Side-by-side
| Carnival / Polka Dot Freshwater Crab | Flash Pleco (L204) | |
|---|---|---|
| Temperature | 75–82°F | 72–82°F |
| pH | 7.5–8 | 6.5–7.6 |
| Hardness (GH) | 8–15 dGH | 6–7.5 dGH |
| Adult size | 1.5" | 20" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 125 gal |
Together, plan on at least 125 gallons.
Compatible alternatives
Instead of Carnival / Polka Dot Freshwater Crab (to keep Flash Pleco (L204)):
- Thai Micro Pom Pom Crab — 0.8", peaceful
- Pom Pom Crab — 1", semi-aggressive
- Thai Micro Crab — 0.4", peaceful
Instead of Flash Pleco (L204) (to keep Carnival / Polka Dot Freshwater Crab):
- Giant Gourami — 24", semi-aggressive
- Oscar — 16", aggressive
- Kissing Gourami — 12", semi-aggressive
Design the whole tank, not just the stocking
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Design a tank with Carnival / Polka Dot Freshwater Crab, Flash Pleco (L204) →Everything compatible with Carnival / Polka Dot Freshwater Crab · …with Flash Pleco (L204)
Related pairings
Carnival / Polka Dot Freshwater Crab + Neon TetraCarnival / Polka Dot Freshwater Crab + Cherry ShrimpCarnival / Polka Dot Freshwater Crab + AngelfishCarnival / Polka Dot Freshwater Crab + Nerite SnailCarnival / Polka Dot Freshwater Crab + Amano ShrimpCarnival / Polka Dot Freshwater Crab + Harlequin Rasbora