hi mate , think keith must of not changed the signs on the tanks , the sp.platinum look very diferant . i think steve has one if iam not mistaking. the ones they have in that look like the ones in the picture has been i.d. by ralf britz of the brittish museam as channa maruloids , which is what i suspect the ones in the pics are that you have posted melanoptera lack the flowers on the side that the bottom pic has and also lack the spot on the tail that is just visable on the upper picture.
i think keith only had one sp. platinum so that has probably sold (although it was £150) he is probably just used the tank that it was in.
cheers col