Clicking Pond Fish?

[Spishkey]

if any of you remeber my other thread in this section asking to id some fish rescued from a pond being filled in (still unsure what they are) well ive noticed a very bizarre thing they do.
they click! its almost as if they are talking to each other (have two groups one either side of the room) they start in the late evening and carry on until its dark, clicking away! i first thought one of the tanks were cracking when i first heard it (only way to describe the noise) but then the fish in the other tank started 'repling'
anyone ever encountered anything like this before???

 

[WILDER]

What type of coldwater fish are they?
Are you sure it's a clinking noise and not croaking.

 

[Spishkey]

most definatly a clicking! have tried picking up the sound on video but it aint going so well dont know what they are, people made a few suggestions on my other thread but still unsure!

 

[saph.st24]

hi can you get a pic of the fish

i had a talking catfish that used to click they have this thick armour and spines on all fins
the noise is activated at the base of the pectoral spine where it joins the socket.
as the fish moves its pectoral fins backwards and forwards the sound of the creaking joint is amplified through its swimbladder, making a loud noise like clicking

 

[Spishkey]

its the fish in the first pic here (the silver ones)
http/www.fishforums.net/index.php?showtopic=287062

 

[saph.st24]

they look like minnows to me lol

i found this but dont know if it true for all other minnows
The male fathead minnow (Pimephales promelas) woos its mate to its nest by "singing." The minnow probably produces this melodic clicking sound by grinding his back teeth against the base of his skull.

When choosing a mate, the female fish considers the male minnow’s looks, as well as his singing talent. During the spawning season, the male’s head swells, thus earning the name "fathead." The male also develops hornlike bumps, called tubercles, on its snout and back. Like your fingernails, tubercles are made of keratin.

The female deposits her sticky eggs on the underside of a board, branch, or rock in 3 to 12 inches of water. Then, the male fertilizes them and guards the nest. He cleans, gently fans, and endlessly strokes the eggs with his tubercles.

 

[Spishkey]

think they are too big to be minnows? (some of these fish are bigger than the goldfish!)

 

[saph.st24]

minnows is just a name used for small silvery fish
here just some

http/fish.dnr.cornell.edu/nyfish/Cyprini...cyprinidae.html

 

[Spishkey]

oh yes definatly look like some of the ones in that link!