here in Germany there goes the discussion about the lenght of P.senegalus ... most people are saying that P.senegalus will not grow longer than 30cm (approx. 12 inches) - now you have shown this really long and big individual ... 35cm!
I know about the fact you are keeping soooo many bichirs - i can see they have a sweet home! The gravel you are using creates a beautiful contrast to the bichir's coloration!