26. (1) Any person, other than a person authorised in writing by the Director, who in the Bangladesh fisheries waters,- (a) uses, or attempts to use, any explosive, poison or other noxious substances for the purpose of killing, stunning, disabling or catching fish, or in any other way rendering such fish more easily caught; or (b) carries, or has in his possession or control, any explosive, poison or other noxious substances with the intention of using such explosive, poison or other noxious substance for any of the purposes referred to in clause (a); or (c) uses, or attempts to use, any prohibited methods of fishing as may be prescribed, or carries, or has in his possession or control, on board any vessel, any fishing gear prohibited under any rule made under this Ordinance; or (d) knowing, or having reasonable cause to believe, that any fish has been caught or taken in contravention of the provisions of this section or any rules made under this Ordinance, receives, or is found in possession of, such fish without lawful excuse, shall be guilty of an offence and shall be liable to a fine not exceeding Taka one lakh or fifteen times the value of the fish, whichever is greater. (2) Any explosive, poison or other noxious substance or fishing gear referred to in sub section (1) found on board any vessel shall be presumed to be intended for the purposes referred to in that sub section unless the contrary is proved.