\documentclass[tikz,border=7mm]{standalone}
\usepackage{tikzphysics}
\usetikzlibrary{positioning}
\begin{document}
\begin{tikzpicture}[font=\small]
\node[fluid tank] (A) {};
\node[fluid tank,pattern=north east lines,right=1cm of A] (B) {};
\node[fluid tank,pattern=horizontal lines,pattern color=blue,dashed,right=1cm of B] (C) {};
\node[fluid tank,fill=cyan!20,below=1cm of A] (D) {};
\node[fluid tank,pattern=none,below=1cm of B] (E) {};
\node[draw,fill=orange!30,minimum width=2cm,below=2cm of C] (F) {ordinary node};
\foreach \n/\t in {A/dots (default),B/north east lines,C/horizontal lines + dashed,D/solid fill,E/no fill}
 \node[above=3mm] at (\n.north) {\t};
\pic (P) at (0,-11) {fluid tank diagram={pattern=none}};
\pic (Q) at (4,-11) {fluid tank diagram={fill=none,pattern=dots}};
\node[above=3mm] at (P-top) {assembly: no fill};
\node[above=3mm] at (Q-top) {assembly: pattern after no fill};
\end{tikzpicture}
\end{document}