notice if u compare with day 2 and day 7, the ending of the tail got a darkening marking on it
+ it is 10mm longer feeding on hikari sinking gf pellets
currently standing at 65+mm
i've also noticed something quite amusing but can't capture on my hp cam
is that they have little black spikes on top of their body.
i believe theses are sensory receptors as mine seem to immediately react to pellets that fall onto of it, while ignoring pellets that are just infront of him.
maybe my fry's sense of smell not well developed yet.