why does my haddoni retreat once a year for a week?

[bergzy]

my neon green haddoni has selected the bottom right corner of my 110g to grow and grow while enjoying my weekly feedings of a large shrimp.

every year for the two years i have had it, it retreats for about week into its little cave...then slowly expands to its old spot.

any explanations?

 

[Toddrtrex]

Mine doesn't do it that long, but last week it did that twice for about a day.

Was yours really "gone" for a whole week?

One day I came home to this,

 

[bergzy]

yep!

that's about what it does. just retreats into the rock work and i do not see hide nor hair of him for a week. then he reappears like nothing happened!

since this is the second time he has done it...i am wondering if it is a annular cyclical thing. i will make a note of it that just before summer solstice that he just up and disappears!

 

[Toddrtrex]

So yours happened last week? Looking at the dates of my pictures, the first time happened on 6/3, then again around the 12th.

I am surprised that yours did that for that long, mine was only for a day. What is really odd is that my blue one ( in the same tank ) didn't do a thing during that time.