Confidence: I'm as sure as I can be.
Notes: Hi Codfish, the small white barbel on the rear edge of the maxillary which separates T. bubalis from M. scorpius is there but it's pointing forwards and is stuck to the maxillary. Its often a lot more difficult to see on specimens which are out of the water as it tends to stick tightly to the lip if not in water. When in water its usually floating free and unmissable. The long spines are also readily visible, the spines on the upper area of the gill plate are not so long and lance-like on M. scorpius.