Which types of fish are not halal?

all type of fish and sea food are halal in Islam (you are allowed to eat them )

Quran says:

أُحِلَّ لَكُمْ صَيْدُ الْبَحْرِ وَطَعَامُهُ

مَتَاعًا لَّكُمْ وَلِلسَّيَّارَةِ ۖ وَحُرِّمَ عَلَيْكُمْ صَيْدُ الْبَرِّ

مَا دُمْتُمْ حُرُمًا ۗ وَاتَّقُوا اللَّـهَ الَّذِي إِلَيْهِ تُحْشَرُونَ ﴿٩٦﴾

Meaning English translation:

{Made lawful to you is the fished of the sea and its food, an enjoyment for you and for travelers. But you are forbidden the hunted of the land whilst you are on pilgrimage. Have fear of Allah, before whom you shall all be assembled. (96)}

[Quran, chapter 5, Surat Alma'eda, verse 96]