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Let $f:X \to T$ be a flat, projective morphism of noetherian schemes with $T$ an irreducible curve. Suppose that there exists a point $o \in T$ such that the fiber $f^{-1}(o)$ is Fano. Is it true that in this case, for all $t$ near $o$, the fiber $f^{-1}(t)$ is Fano?

N.B. If necessary, one can assume that $f$ is smooth, but if such a statement holds without this assumption, it will be more interesting.

Let $f:X \to T$ be a flat, projective morphism of noetherian schemes with $T$ an irreducible curve. Suppose that there exists a point $0 \in T$ such that the fiber $f^{-1}(0)$ is Fano.

Q. Is it true that in this case, for all $t$ near $0$, the fiber $f^{-1}(t)$ is Fano?

N.B. If necessary, one can assume that $f$ is smooth, but if such a statement holds without this assumption, it would be more interesting.

Let $f:X \to C$ be a flat, projective morphism of noetherian schemes with $C$, an irreducible curve. Suppose that there exists a point $o \in C$ such that the fiber $f^{-1}(o)$ is Fano. Is it true that in this case, for all $t$ near $o$, the fiber of $f$, $f^{-1}(t)$ is Fano?

N.B. If necessary, one can assume that $f$ is smooth, but if such a statement holds without this assumption, it will be more interesting.

Let $f:X \to T$ be a flat, projective morphism of noetherian schemes with $T$ an irreducible curve. Suppose that there exists a point $o \in T$ such that the fiber $f^{-1}(o)$ is Fano. Is it true that in this case, for all $t$ near $o$, the fiber $f^{-1}(t)$ is Fano?

N.B. If necessary, one can assume that $f$ is smooth, but if such a statement holds without this assumption, it will be more interesting.

Let $f:X \to C$ be a flat, projective morphism of noetherian schemes with $C$, an irreducible curve. Suppose that there exists a point $o \in C$ such that the fiber $f^{-1}(o)$ is Fano. Is it true that in this case, every fiber of $f$, $f^{-1}(t)$ is Fano for all $t$?

N.B. If necessary, one can assume that $f$ is smooth, but if such a statement holds without this assumption, it will be more interesting.

Let $f:X \to C$ be a flat, projective morphism of noetherian schemes with $C$, an irreducible curve. Suppose that there exists a point $o \in C$ such that the fiber $f^{-1}(o)$ is Fano. Is it true that in this case, for all $t$ near $o$, the fiber of $f$, $f^{-1}(t)$ is Fano?

N.B. If necessary, one can assume that $f$ is smooth, but if such a statement holds without this assumption, it will be more interesting.