I think my betta is dying...

[swissescapes]

I have owned this betta for Over 1.5 year, I have watched him grow into a lovely calming Fishy! I do take very good care with the proper temp, food and changing of His 2 gallon bowl!
but today My big guy i noticed that he started to bury himself under some flat medium size smooth pebbles..He is still kinda active and hes not eating that much..(2 pebbles a day) it seems to me that he is just getting tired and getting ready for Death?? I could be wrong...i guess time will tell!!

[teh13371]

any other info? do you have plants? gravel or sand? enviorment? also check nitrate/nitrite settings and stuff like that