I realise this photo is really unlikely to SHOW you the bro, but he’s there! I promise!!
Also, I have developed an easy tank hunting technique - as was implemented in the above photo. If you hold a torch into the side of the tank, you can light up the particles in the water and check out the detail! Nifty.
EDIT: HUZZAH! Things are happening!! I now have 4 newly hatched little bros!