Take the 2-minute tour ×
Arqade is a question and answer site for passionate videogamers on all platforms. It's 100% free, no registration required.
  1. If I channel to make an artificial underground canal or pool, fed by a natural river (and disappearing at the edge of the map), is there a chance small fish (as I understand it, vermin) will populate the canal so that I can fish from it?

  2. What if I let the water run through floor grates or wall grates to keep out crocodiles? As I understand it, this will definitely keep out large fish (creatures, as opposed to vermin) like carps. But what about small fish? I.e. do vermin pass through the floor grates? Or, on the other hand is it possible that the small fish will spontaneously spawn in my artificial pool/canal?

Of course I could build a walled off area with floorgrates over the river, this would let my fisherman fish safely as well. but it's less beautiful and I thought the grate over the river would be more vulnerable to building destroyers.

share|improve this question
    
As I understand it, building destroyers have to be adjacent to break things, so a grate above them should be safe. –  SevenSidedDie Sep 25 '11 at 3:39
    
Building destroyers are supposed to be able to break grates above them, but it's currently bugged so they cannot. They can still break downward, just not upward. –  Paul Z Sep 25 '11 at 7:56
    
well they would also have to be swimming while they break a grate above a river, which is i guess not impossible. But: what about my original questions? Does nobondy know? –  relativegiant Sep 25 '11 at 20:17
    
It is amazing that no-one knows the answer ;) I have in the meantime constructed two indoor pools fed by a river, one of them behind a grate - we will soon know something more about the probability of fish spawning there! Although I'm not enough of an expert to work it out in Bayseian terms... –  relativegiant Oct 1 '11 at 18:50
1  
So! If the indoor pool is behind a grate or fortification, there is no fishing (It says "Fishing (0)" in the zone menu right from the start. The artificial pool without grates DOES support a fishing zone, but I can't say yet if anything is being caught there. Investigation is ongoing. –  relativegiant Oct 10 '11 at 10:45

3 Answers 3

  1. Yes, water creatures can swim from natural rivers into any connected bodies of water including those dug out by your dwarves.
  2. I believe bars, grates and fortifications all let water flow but keep creatures out, including vermin at present. The idea for allowing vermin/small creatures to pass through bars (but not grates) has been floated in the past, but to my knowledge this has never been implemented.

Also note this bug: dwarves and creatures can sometimes be pushed through grates/bars/fortifications by water flow, though in my experience this is pretty rare.

share|improve this answer

Vermin appear randomly in any tile that can support them. There's no way to prevent it.

share|improve this answer

No, I'm almost certain that won't happen. I believe fish will only swim in the river, stream, moat, etc. that they're supposed to be in and where the game designers put them. It's not like the fish will understand there's more water over there and try to swim to your spot.

share|improve this answer
    
Rats seem to understand that there's more land when you dig out something and go there, so it makes sense that fish would wander similarly. –  Ullallulloo Nov 24 '11 at 19:24
1  
-1, this is just speculation. –  user7220 Feb 22 '12 at 8:57

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.